Proposes spinmon qubits that entangle transmon states with Andreev quasiparticle spins for coherent control and noise robustness in superconducting systems.
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Encoding a qubit in an oscillator
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A two-layer superconducting architecture using DC-SQUIDs and fluxonium qubits achieves universal continuous-variable quantum gates with simulation fidelities exceeding 98%.
Fractional OAM charge ℓ=1.5 induces an optimal 67.5° GKP lattice rotation that reduces error rate 23.9× with <0.2% loss in Fisher information and yields 41% higher metrological capacity.
A family of positive semidefinite operators is introduced that witnesses arbitrary logical GKP qubit states and enables their efficient characterization via three quadrature measurements.
Lattice QED is established as a quantum error-correcting code beyond stabilizers, with explicit recovery operations constructed via quantum reference frames for gauge and fermionic sectors.
Hybrid pulsed-CW architecture for optical quantum computation with experimental proof-of-principle of ultrafast homodyne detection on pulsed single-photon states yielding W(0,0) = -0.153.
Applies structure theorem for quasiprobability representations to bosonic QEC codes to obtain general phase-space representations and error structures for GKP, cat, and binomial codes.
Experimental tests of parity-check filters in a single-photon eight-mode photonic register on Quandela's Belenos processor show mean 0.6% DC leakage with 21x suppression and 94-99% syndrome channel selectivity.
Quantum mirrors transfer complete photonic continuous-variable state information to an atomic control system, enabling tomography via atom measurements alone using kernel functions and Wigner reconstruction.
Microscopic phase contributions from crystal edges produce large threshold variations in nominally identical linear OPOs, traced via SHG and threshold measurements on three devices.
New combinatorial proofs and circuit designs for quantum error correction reduce physical qubit overhead by up to 10x and time overhead by 2-6x for codes including Steane, Golay, and surface codes.
Incoherent qubit pumping combined with dispersive magnon-number selectivity stabilizes Wigner-negative magnon Fock states, with an analytical birth-death model matching numerics.
Nonlinear feedforward in deterministic and probabilistic teleportation reduces noise and improves nonlinear squeezing transfer for non-Gaussian states in small CV cluster states.
A literature review synthesizing developments in quantum Wasserstein distances, their applications, and unresolved questions.
Review synthesizing crosstalk mechanisms, mitigation strategies, and security vulnerabilities across major quantum computing platforms from existing literature.
citing papers explorer
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Coherent control of spinmons
Proposes spinmon qubits that entangle transmon states with Andreev quasiparticle spins for coherent control and noise robustness in superconducting systems.
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Building Block For Universal Continuous Variables Computation In Superconducting Devices
A two-layer superconducting architecture using DC-SQUIDs and fluxonium qubits achieves universal continuous-variable quantum gates with simulation fidelities exceeding 98%.
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OAM-Induced Lattice Rotation Reveals a Fractional Optimum in Fault-Tolerant GKP Quantum Sensing
Fractional OAM charge ℓ=1.5 induces an optimal 67.5° GKP lattice rotation that reduces error rate 23.9× with <0.2% loss in Fisher information and yields 41% higher metrological capacity.
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Efficient characterization of general Gottesman-Kitaev-Preskill qubits
A family of positive semidefinite operators is introduced that witnesses arbitrary logical GKP qubit states and enables their efficient characterization via three quadrature measurements.
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Error Correction in Lattice Quantum Electrodynamics with Quantum Reference Frames
Lattice QED is established as a quantum error-correcting code beyond stabilizers, with explicit recovery operations constructed via quantum reference frames for gauge and fermionic sectors.
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Hybridization of pulse and continuous-wave based optical quantum computation
Hybrid pulsed-CW architecture for optical quantum computation with experimental proof-of-principle of ultrafast homodyne detection on pulsed single-photon states yielding W(0,0) = -0.153.
-
A Structure Theorem for Phase-Space Representations of Continuous-Variable Quantum Error-Correcting Codes
Applies structure theorem for quasiprobability representations to bosonic QEC codes to obtain general phase-space representations and error structures for GKP, cat, and binomial codes.
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Characterization of nested Walsh parity-check filters in a single-photon eight-mode register on a cloud photonic processor
Experimental tests of parity-check filters in a single-photon eight-mode photonic register on Quandela's Belenos processor show mean 0.6% DC leakage with 21x suppression and 94-99% syndrome channel selectivity.
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Continuous-Variable Quantum State Tomography Enabled by Quantum Mirrors
Quantum mirrors transfer complete photonic continuous-variable state information to an atomic control system, enabling tomography via atom measurements alone using kernel functions and Wigner reconstruction.
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Phase-Sensitive Crystal-Edge Effects in Linear Optical Parametric Oscillators: Why Nominally Identical Squeezers Behave Differently
Microscopic phase contributions from crystal edges produce large threshold variations in nominally identical linear OPOs, traced via SHG and threshold measurements on three devices.
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Lower overhead fault-tolerant building blocks for noisy quantum computers
New combinatorial proofs and circuit designs for quantum error correction reduce physical qubit overhead by up to 10x and time overhead by 2-6x for codes including Steane, Golay, and surface codes.
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Wigner-Negative Magnon Steady States from Incoherent Qubit Pumping
Incoherent qubit pumping combined with dispersive magnon-number selectivity stabilizes Wigner-negative magnon Fock states, with an analytical birth-death model matching numerics.
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Non-Gaussian state teleportation with a nonlinear feedforward
Nonlinear feedforward in deterministic and probabilistic teleportation reduces noise and improves nonlinear squeezing transfer for non-Gaussian states in small CV cluster states.
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Wasserstein Distances on Quantum Structures: an Overview
A literature review synthesizing developments in quantum Wasserstein distances, their applications, and unresolved questions.
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Crosstalk In Contemporary Quantum Devices
Review synthesizing crosstalk mechanisms, mitigation strategies, and security vulnerabilities across major quantum computing platforms from existing literature.