Results 11 to 20 of about 13,882 (271)
Quantum discord with weak measurements [PDF]
Annals of Physics, 2014 Weak measurements cause small change to quantum states, thereby opening up the possibility of new ways of manipulating and controlling quantum systems. We ask, can weak measurements reveal more quantum correlation in a composite quantum state?
Uttam Singh, Arun Kumar Pati
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Gaussian quantum discord [PDF]
Physical Review Letters, 2010 We extend the quantum discord to continuous variable systems and evaluate Gaussian quantum discord C(\rho) for bipartite Gaussian states. In particular, for squeezed thermal states (STS), we explicitly maximize the extractable information over Gaussian ...
Giorda, Paolo, Paris, Matteo G. A.
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Interpreting Quantum Discord in Quantum Metrology [PDF]
Journal of Physics: Conference Series, 2015 Multipartite quantum systems show properties which do not admit a classical explanation. In particular, even nonentangled states can enjoy a kind of quantum correlations called quantum discord. I discuss some recent results on the role of quantum discord
Girolami, Davide
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Results in PhysicsQuantum discord goes beyond entanglement and exists in a wide range of quantum states that may be separable, playing a crucial role in quantum information tasks.
Yiding Wang +2 more
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Quantum correlation of microwave two-mode squeezed state generated by nonlinearity of InP HEMT [PDF]
Scientific Reports, 2023 This study significantly concentrates on cryogenic InP HEMT high-frequency circuit analysis using quantum theory to find how the transistor nonlinearity can affect the quantum correlation of the modes generated.
A. Salmanogli
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Applying Gaussian quantum discord to quantum key distribution
, 2013 In this paper, we theoretically prove that the Gaussian quantum discord state of optical field can be used to complete continuous variable (CV) quantum key distribution (QKD). The calculation shows that secret key can be distilled with a Gaussian quantum
Xiaolong Su
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Scales of Time Where the Quantum Discord Allows an Efficient Execution of the DQC1 Algorithm [PDF]
Advances in Mathematical Physics, 2014 The power of one qubit deterministic quantum processor (DQC1) (Knill and Laflamme (1998)) generates a nonclassical correlation known as quantum discord.
M. Ávila, G. H. Sun, A. L. Salas-Brito
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Quantum correlations beyond entanglement in a classical-channel model of gravity [PDF]
Scientific Reports, 2022 A direct quantization of the Newtonian interaction between two masses is known to establish entanglement, which if detected would witness the quantum nature of the gravitational field.
Federico Roccati +6 more
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Measuring quantum discord at the LHC
Journal of High Energy PhysicsThere has been an increasing interest in exploring quantities associated with quantum information at colliders. We perform a detailed analysis describing how to measure the quantum discord in the top anti-top quantum state at the Large Hadron Collider ...
Tao Han +3 more
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Quantum features of gravcats [PDF]
Scientific ReportsWe explore the quantum features of two gravitational cats (gravcats) modeled by two qubits, focusing on quantum steerability, concurrence, and geometric quantum discord under varying conditions of gravitational interaction strength, temperature, and ...
Elhabib Jaloum +2 more
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