REVIEW 25 cited by
Entanglement of a Pair of Quantum Bits
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
The ``entanglement of formation'' of a mixed state of a bipartite quantum system can be defined in terms of the number of pure singlets needed to create the state with no further transfer of quantum information. We find an exact formula for the entanglement of formation for all mixed states of two qubits having no more than two non-zero eigenvalues, and we report evidence suggesting that the formula is valid for all states of this system.
Forward citations
Cited by 25 Pith papers
-
Lower bounds on non-local computation from controllable correlation
New lower-bound techniques based on controllable correlation and entanglement yield non-trivial bounds for Haar-random two-qubit unitaries and the first known bounds for CNOT, DCNOT, sqrt(SWAP), and XX gates, with a t...
-
Analytical Landscape of Maximal Magic for Two-Qutrit States and Beyond
Maximal stabilizer Rényi entropy for two-qutrit states is ln(81/17), achieved at 18 degenerate maxima; a general prime-d formula ln[d⁴/(2d²−1)] is conjectured and verified for d=2,3,5.
-
Higgs Scattering and Entanglement in SMEFT
Higgs scattering in SMEFT is analyzed with von Neumann entropy, linear entropy, and concurrence as momentum-isospin entanglement measures, determined by Wilson coefficients of dimension-6 and dimension-8 operators, re...
-
Quantum detection of CP violation in the $t\bar{t}$ system: production
CP-odd SMEFT top interactions appear as ΔB and antisymmetric C_A in the tt̄ production density matrix; direct markers beat most QI measures for CP sensitivity at LHC and FCC-ee.
-
Quantum Information as a New Lens for Precision Neutrino Physics
Concurrence minima in neutrino oscillations identify low-entanglement energy regions that, when aligned with NOνA and T2K data, yield tighter joint constraints on sin²θ₂₃, δ_CP, and Δm²₃₁.
-
Anomalous Decay of Quantum Resources: The Entanglement Sudden Death Mpemba Effect
More strongly entangled two-qubit states can reach separability faster than weakly entangled ones under local amplitude damping, forming an ESD Mpemba effect with an exact analytical derivation of crossover time.
-
Entangling Power: A Probe of Symmetry and Integrability in Quantum Many-Body Systems
Entangling power in Heisenberg spin chains shows a monotonic decrease with growing symmetry in small models, sharp dips at SU(2) and free-fermion points in finite chains, and vanishes at SU(2) points but maximizes at ...
-
Polarization, Maximal Concurrence, and Pure States in High-Energy Collisions
Local spin polarization imposes an upper bound on concurrence in two-qubit systems that is saturated by pure states, and this bound lowers maximal entanglement in the polarized e+e- to Z to qqbar process relative to t...
-
No-Go Theorem on Fault Tolerant Gadgets for Multiple Logical Qubits
No stabilizer code can implement the full logical Clifford group on multiple logical qubits using transversal gates, fold-transversal gates beyond two qubits, or code automorphisms.
-
Quantum entanglement between partons in a strongly coupled quantum field theory
In unquenched scalar Yukawa theory, parton entanglement entropy encodes quantum information that cannot be reduced to Shannon entropy of parton distributions.
-
Qubit entanglement from forward scattering
In perturbative relativistic 2→2 scattering the concurrence of the traced-out qubit density matrix depends at leading order on the real part of the inelastic forward amplitude.
-
Privacy-Preserving Driver Drowsiness Detection with Spatial Self-Attention and Federated Learning
Entanglement harvesting from a mass-superposed BTZ black hole is enhanced by interference, while mutual information shows a distance-dependent crossover relative to a single spacetime.
-
Extremal Magic States from Symmetric Lattices
Vectors from symmetric lattices E8, BW16, and E6 map onto stabiliser and maximal-magic states, yielding explicit three-qubit and one-qutrit magic states and conjectured complete counts.
-
Can spacetime fluctuations generate entanglement between co-moving accelerated detectors?
Two uniformly accelerated Unruh-DeWitt detectors in nested Rindler frames harvest shift-independent entanglement from the Rindler vacuum whenever their trajectories are separated by any nonzero amount.
-
Quantum spin correlations in $Z^\prime$-mediated $t\bar{t}$ production at future lepton colliders
Quantum spin observables of t-bar-t pairs at future lepton colliders can distinguish chiral U(1)_X Z′ charge assignments, and polarized e−e+ beams isolate left- vs right-handed lepton couplings.
-
Production of Magic States via $Z$ Bosons and Dark Photons
Magic distributions are computed for EW processes (reproducing QED at low energy, new at high energy/Z resonance) and dark-sector scatterings, reaching maximal magic at mass ratios m_f/m_χ → 0 and → 1.83929.
-
Quantum Correlations of Neutrinos in the Kerr-Newman Space-time
Neutrino quantum correlations in Kerr-Newman spacetime differ from Schwarzschild case, with black hole spin and charge modulating periods and amplitudes for radial and non-radial paths.
-
A Breakdown Case Study of the Lindblad Approach via Entanglement and Purity
A two-qubit system in a random many-body environment decoheres with two successive Gaussian decays, which a time-homogeneous Lindblad equation can never reproduce because its short-time decay is always linear.
-
Entanglement and Bell Nonlocality in $\tau^+ \tau^-$ at the LHC using Machine Learning for Neutrino Reconstruction
Simulations of pp to tau+ tau- at the LHC with ML neutrino reconstruction show Bell nonlocality above 5 sigma, proposing tau pairs as a new benchmark system for quantum information studies.
-
Testing spooky action between free-traveling electron-positron pairs
Simulations show that Bhabha scattering can produce electron-positron pairs with near-maximal entanglement, and a two-target secondary-scattering scheme could in principle measure their spin correlations.
-
Harmony for 2-Qubit Entanglement
Harmony is a new entanglement measure for two qubits expressed as a simple function of the density operator that detects separability and maximal entanglement and is monogamous for three-qubit states.
-
Effect of Off-diagonal NSI Parameters on Entanglement Measurements in Neutrino Oscillations
Off-diagonal NSI parameters modify EOF, Concurrence and Negativity in neutrino oscillations, with largest effects at low energy and Negativity remaining dominant at higher energies while showing clear δ_CP dependence.
-
Physics of the Electron-Ion Collider in China
A review of the EicC physics case argues that the proposed Chinese electron-ion collider, at 15-20 GeV collision energy, can complement the US EIC with high-precision measurements of sea-quark spin structure, proton m...
-
Entanglement Negativity of Spin-Orbit Correlations in a general Qubit-Qudit Setup
For any pure qubit-qudit state, the negativity of the partial transpose equals the square root of the determinant of the two-by-two reduced density matrix, which the paper applies to spin-orbit entanglement in protons.
-
Entanglement cost in non-local quantum computation
A review compiling upper and lower bounds on entanglement cost for non-local quantum computation and its connections to cryptography, complexity, communication, and quantum gravity.
Discussion (0). Continue with ORCID to comment.