Four-qubit states reproduce known CFTs
Critical points of an entropy function reconstruct a CFT's spectrum with no Hamiltonian input.
· “A systematic search for conformal field theories in very small spaces”
quant-ph
Quantum Physics
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Damping rotation keeps quantum reservoirs computing indefinitely
Controlled rotation toward |0⟩ cancels measurement-induced forgetting and improves memory on real hardware.
· “Quantum reservoir computing induced by controllable damping”
Faking joint qubit measurements needs at least n classical symbols
Even for qubits, message size must grow with the number of jointly measured systems, so no fixed-size classical model works.
· “A lower bound on the classical simulation cost of star-network correlations”
Finding fewest CNOT gates is NP-complete
Even with all-to-all wiring, exact minimisation stays hard; sparse targets and ancillas don't help.
· “CNOT-Distance is NP-complete under all-to-all connectivity”
POVM feedback steers open quantum systems to target states
Measurement-guided control keeps fidelity high under depolarizing, phase-damping, and amplitude-damping noise.
· “Time-Optimal Control of Finite Dimensional Open Quantum Systems via a Model Predictive Strategy”
All incompatible measurements hide nonlocality
With quantum inputs, even incompatible-local sets violate Bell inequalities; extractable nonlocality is bounded by incompatibility.
· “All incompatible sets of measurements can generate Buscemi nonlocality”
Quantum sensors chart new paths in physics
Superconducting sensors, atom interferometers, and spin sensors could push fundamental-physics experiments beyond classical sensitivity limi
· “Quantum measurement systems and applications to particle physics and cosmology”
Optimal dephasing can slow bosonic decay
Long-lived collective modes, like Lifshitz tails, dominate late-time dynamics and offer a new control knob.
· “Lifshitz-like Metastability and Optimal Dephasing in Dissipative Bosonic Lattices”
Quantum nets keep accuracy through 50% label poisoning
Under flipped labels, classical networks degrade at once; quantum models plateau, then fail sharply and forget faster.
· “Superior resilience to poisoning and amenability to unlearning in quantum machine learning”
Dark states make entanglement filtering far simpler
A photon-carrying network can purify mixed input states by post-selecting on a unique dark state, no engineered baths needed.
FNO surrogate designs hydronium control pulses
Operator learning replaces 10-hour pulse optimizations with 10-minute design in an 888-dimensional molecular subspace.
· “Inverse Design of Quantum Control Sequences with Fourier Neural Operators”
Quantum control gets a receding-horizon recipe with proof
Model predictive quantum control cuts runtime, adds feedback robustness, and guarantees exponential arrival at the target.
Reading a quantum reservoir twice boosts chaos forecasts 100-fold
A five-spin quantum reservoir, read at two moments, predicts low-dimensional turbulence and a classic chaos benchmark.
· “Forecasting Low-Dimensional Turbulence via Multi-Dimensional Hybrid Quantum Reservoir Computing”
Quantum machine reads exoplanet atmospheres on real hardware
On the Fez processor, hardware matches simulation; radius and water/methane abundances are recovered from JWST-like spectra.
· “Exoplanetary atmospheres retrieval via a quantum extreme learning machine”
Circuit screen finds 97% fraud detector
Six-qubit circuit from a 1,000-circuit library beats four manual quantum designs on credit-card fraud.
· “CircuitHunt: Automated Quantum Circuit Screening for Superior Credit-Card Fraud Detection”
Classical chemistry outruns quantum for most methods until past 2050
Quantum phase estimation overtakes only the most expensive classical methods, leaving routine chemistry classical for decades.
Quantum-simulator speedup claim of 350% rests on an absent system
The supplied full text is an unrelated physics paper, so the abstract's 27-qubit result has no visible evidence.
Hybrid circuit switches slow and fast light
Cross-Kerr couplings in a two-transistor optomechanical device reshape probe spectra and add gain
Ghost imaging reproduces Grover's search step
When the Grover diffusion step is folded into the measurement masks, marked pixels emerge bright and the rest dark.
· “Unveiling the link between quantum ghost imaging and Grover's quantum searching algorithm”
Area law for quantum information predicted in superfluid helium films
Numerical model of a thin-film helium simulator shows mutual information scales with boundary size, enabling lab tests.
· “Information in quantum field theory simulators: Thin-film superfluid helium”
A tuned coupler cuts quantum-gate spectator leakage 30-fold
Near-resonant bystander qubits no longer demand big frequency gaps; leakage stays at 10^-4 even with three spectators.
First bulk proof of momentum-band topology in acoustic lattice
Reconstructing the Floquet Hamiltonian yields a quantized Berry phase and time-localized interface states.
· “Observation of Momentum-Band Topology in PT-Symmetric acoustic Floquet Lattices”
Two 100-MHz signals 5 Hz apart resolved in 1 ms
A mid-pulse phase flip cancels common-mode noise and resolves 5-Hz separations 200 times below the linewidth
Quantum advantage grows exponentially with the number of senders
Bounded per-sender information leakage suffices: the gap over classical protocols widens as senders grow.
Two-color laser pulse lifts shallow diamond NV fidelity to 95%
Microwatts of green plus milliwatts of near-infrared cut charge-prep error from ~30% to ~5% in shallow diamond sensors.
Memoryless quantum reservoir forecasts time series with delay readout
No state prep, no feedback, no entanglement: five qubits plus readout delays handle nonlinear regression and forecasting.
Meson wave packets from O(L^3) to O(L^2) CNOTs
A non-variational circuit with O(L) depth prepares meson scattering states; QSE operators reach 99.9% fidelity on vector mesons.
· “Scalable Quantum Algorithm for Meson Scattering in a Lattice Gauge Theory”
Symbolic gate expressions make quantum compilers 10x faster
OpenQudit replaces gate names with unitary expressions, supporting qudits and safer tool composition.
Pulse shaping cuts trapped-ion gate errors from Δt² to Δt¹⁰
Fourier-amplitude MS gate adds one or two linear constraints; extra laser power falls below 1.2 percent.
Microresonator array interleaves combs for high-rate entanglement
Five rings already make frequency-bin Bell states at 7 kHz with 87% fidelity; the chip holds 20.
Automated search designs dynamic circuits for any quantum target
Mid-circuit measurement and feed-forward, tuned numerically, cut circuit depth on states, gates, and simulation blocks.
One inequality yields uncertainty bounds for classical and quantum systems
Same noise-based argument replaces perturbation proofs and tightens quantum precision bounds under strong driving.
Smooth condensate flows realize sonic black holes and wormholes
In 2D condensates, flow can outrun sound at a horizon, with a computable Hawking temperature for uniform-density setups.
· “Acoustic black holes, white holes, and wormholes in Bose-Einstein condensates in two dimensions”
Entanglement entropy beats HOMO/LUMO for active-space picks
Multi-orbital Rényi-2 ranking from a tensor network lowers CASCI energies and sharpens dipoles on BeO and BN.
· “TNASS: Tensor Network Active Space Selection with the Entanglement Feature”
0-pi qubit readout shrinks errors exponentially
Two QND schemes read the Z and X bases while keeping the qubit protected, completing a fault-tolerant control set.
· “Protected measurements for protected superconducting qubits”
Cut lattice-surgery schedules 4.83x with one resource-aware compiler
Harvest packs magic states, routing, and placement into one schedule, then prunes unused patches.
· “Harvest: Resource-Aware Quantum Compilation for Magic State Protocols”
Twisting a surface rewrites two-body spectra to quartic criticality
A charged pair on a twisted sheet localizes, splits, and swaps harmonic spacing for quartic scaling.
· “Curvature as a control field in helicoidal two-body systems”
One ancilla and two gates purify amplitude-damping noise
Post-selecting the |0> outcome keeps the no-jump branch, raising single-qubit fidelity above 0.99 for damping up to 0.42.
One bit per window makes neural decoders run in parallel
Trained on local window corrections, it matches AlphaQubit accuracy with constant-latency parallel decoding.
· “Learning Neural Decoding with Parallelism and Self-Coordination for Quantum Error Correction”
Two axioms define which quantum systems are local
The pair admits Maxwell's higher-form symmetry while excluding hyperplane theories, generalized free fields, and odd Majorana chains.
Projective charges make thermal states remember the initial state
Charged observables settle into a generalized Gibbs ensemble that remembers the initial projective charge.
· “Eigenstate Thermalization Hypothesis with projective representation”
Quantum algorithm reads fidelity susceptibility at optimal precision
A resolvent reformulation lets quantum amplitude estimation read the probe at the precision limit
· “Heisenberg limited quantum algorithm for estimating the fidelity susceptibility”
Hadronic vacuum polarization ratio in muonic atoms holds near 67%
Relativistic calculation finds HVP reaches 68% of muon-VP at high Z; spikes trace nuclear radii.
Gaussian process states reach a 64-atom chemistry benchmark
The same kernel-based wavefunction model handles strong electron correlation in molecules and MNIST image classification.
· “Bayesian perspectives for quantum states and application to ab initio quantum chemistry”
Quantum circuit steers drone paths with linear scaling
QAOA maps each route segment to a qubit and finds collision-free routes, even on noisy quantum hardware.
· “QUAV: Quantum-Assisted Path Planning and Optimization for UAV Navigation with Obstacle Avoidance”
Quantum text models beat the transformer at avoiding repetition
They also post perfect vocabulary-diversity scores, but pay for it in perplexity and domain accuracy
Qubit dissipation models vibrational relaxation in electron transfer
A 10-site donor-acceptor chain runs on superconducting hardware, reproducing non-Markovian vibronic spectra.
Fuzzy-sphere geometry yields skyrmion Hall invariant and fusion rules
Quantizing with a deformed-fuzzy-sphere Lie derivative turns matrix Chern-Simons droplets into effective gauge theories.
· “Microscopic field theories of the quantum skyrmion Hall effect”
Quantum annealer finds tensor-network error does not drop
At 128 spins, BP-TNS error stays flat from L=3 to L=4, contradicting the predicted loop-removal improvement.
· “Evaluating classical simulations with a quantum processor”
Quantum solver drops time dependence for dissipative ODEs
New algorithms need only polylog queries in 1/ε, regardless of how long the system evolves.
Sample cost of Gaussian-state tomography no longer scales with energy
Adaptive protocol estimates even highly squeezed states in trace distance with no photon-number overhead, up to log-log factors.
Renormalized Yukawa model yields finite
Counterterms make the spectrum and parton densities finite while block-encoding cost grows only ~50 percent.
Moving heat baths let a quantum engine beat Carnot
A Doppler-shifted reservoir changes the engine's boundaries and can yield work even with zero temperature difference.
· “Relativistic Quantum Thermal Machine: Harnessing Relativistic Effects to Surpass Carnot Efficiency”
8-channel chip hits 71 dB extinction at 795 nm
Foundry PIC also shows -68 dB crosstalk and nanosecond switching for qubit and Rydberg control.
Hong-Ou-Mandel interferometer runs a neural net with constant photons
A single coincidence-rate measurement computes all M hidden neurons; photons stay flat as image size and neuron count grow.
Classical stand-ins cut quantum processor calls by orders of magnitude
Using 0.023% of the usual quantum measurements, a classical surrogate pre-trains VQEs and maps Floquet phases.
· “Demonstration of Efficient Predictive Surrogates for Large-scale Quantum Processors”
Quantum dynamics lifts MNIST accuracy from 65.4 to 95.6%
A classical encoder feeds a 4-qubit Ising chain that separates image classes the encoder cannot, on four benchmarks.
· “Enhanced image classification via hybridizing quantum dynamics with classical neural networks”
Mobility edges form exact circles in non-Abelian chain
A circle in the complex energy plane separates Anderson-localized from extended eigenstates.
· “Mobility rings in a non-Hermitian non-Abelian quasiperiodic lattice”
Braiding stays nonabelian even for imperfect Majoranas
A compensating coupling restores degeneracy, so a double braid rotates by an angle that vanishes only in the fermion limit.
First quantum FCC-lattice run recovers a peptide's ground state
The 12-direction lattice fits real helices, and the newer Heron chip samples the best fold up to three times more often.
· “Quantum Algorithm for Protein Structure Prediction Using the Face-Centered Cubic Lattice”
Periodic qubit resets stop barren plateaus in quantum circuits
A proof plus numerics show dissipative circuits stay trainable under noise where unitary circuits fail.
· “Scaling Quantum Algorithms via Dissipation: Avoiding Barren Plateaus”
A 12-qubit circuit captures nearly all benzene correlation energy
Hardware runs land within tens of milliHartree of CCSD(T) for benzene and porphyrin.
· “Coupled Cluster Downfolding Theory in Simulations of Chemical Systems on Quantum Hardware”
New recipe makes semiclassical gravity fully self-consistent
Quantum matter sources a classical Einstein tensor, with the metric re-glued continuously along future light cones of collapses.
Junction shape decides whether a germanium qubit shows up
The model puts the missing Andreev signal below 30 mK thermal noise and shows a 55-nm channel lifts it to 1.3 GHz.
· “Resolving Andreev spin qubits in germanium-based Josephson junctions”
Every complex quantum correlation survives in a real Kähler space
Splitting wavefunctions into real and imaginary parts recovers inner products, spectra, and composite states without complex numbers.
Cavity tricks let remote qubits entangle 30-75% faster
Strong-coupling cavities beat the two-photon benchmark for trapped-ion networks while keeping fidelity above 99%.
One diffusion pass designs a quantum circuit and tunes its angles
A text prompt guides one neural network to output both gate layout and rotation angles, skipping parameter-optimization loops.
· “Leveraging Diffusion Models for Parameterized Quantum Circuit Generation”
Cryogenic S-parameters at 45 mK now come with an uncertainty budget
At 6 GHz, a 20 dB attenuator reads 20.70 ± 0.08 dB, so quantum-circuit engineers can trust cryogenic metrology.
· “Full Two-Port S-Parameters at mK Temperatures: a Calibration Strategy and Uncertainty Budget”
Survey maps qubit-mapping compilers for every leading quantum platform
Superconducting, trapped-ion, and neutral atom chips each need different routing; this survey organizes the field into one picture.
A ten-qubit superconducting chip was used to demonstrate quantum switches that route…
A superconducting 10-qubit processor demonstrated coherent quantum routers for bucket-brigade QRAM, with reported fidelities of 95.74% for…
The paper proves that the one-shot dynamic coherence cost and distillation of quantum…
New bounds tie channel coherence measures to how many QFT gates are needed, even when a catalyst is used.
· “One-shot manipulation of coherence in dynamic quantum resource theory”
Antisymmetric exchange explains ODMR mystery in organic crystals
A 100 MHz DMI term quantitatively reproduces the measured drop, vanish, and partial recovery of ODMR with magnetic field.
· “Spin dependent fluorescence mediated by anti-symmetric exchange in triplet exciton pairs”
Non-Gaussian states bottleneck photonic simulators
A review maps why universal photonic computing gets exponentially harder and where tensor networks and GPU acceleration step in.
· “Gaussian Models to Non-Gaussian Realms of Quantum Photonic Simulators”
Form factor matches random-matrix curve in all three Dyson classes
Beyond a Thouless time, kicked many-body spectra reproduce COE, CUE, and CSE form factors to second order.
No finite classical protocol can simulate a qubit channel
Even unlimited back-and-forth messages fail once joint entangled measurements must be reproduced.
· “No-Go Theorem for Generic Simulation of Qubit Channels with Finite Classical Resources”
Switch of switches distils any qubit Pauli channel
Nested switches beat the quantum switch, making even entanglement-breaking channels noiseless with nonzero probability.
· “Probabilistic Channel Distillation via Indefinite Causal Order”
Machine-learning metric predicts quantum circuit quality 49% better
On two 20-qubit QPUs the trained model hits 0.91 correlation with true execution quality, vs 0.73 for the best classic metric.
· “Improving Figures of Merit for Quantum Circuit Compilation”
Exact entanglement found for every GHZ-W mixture
A complete geometric solution for the square root of the threetangle covers the whole Bloch sphere.
· “The exact convex roof for GHZ-W mixtures for three qubits and beyond”
Joint measurement alone can run the simplest quantum computer
A 2040 retrospective says one measurement gate plus AI trained on quantum data can make quantum computers worth building.
Circuit cutting costs slashed 16x for pruned quantum ansatzes
Clifford determinism and sparse tensors shrink experiments and extend cutting past 200 qubits.
