Transfer of Nonclassical Properties from A Microscopic Superposition to Macroscopic Thermal States in The High Temperature Limit

Abstract

We present several examples where prominent quantum properties are transferred from a microscopic superposition to thermal states at high temperatures. Our work is motivated by an analogy of Schrodinger's cat paradox, where the state corresponding to the virtual cat is a mixed thermal state with a large average photon number. Remarkably, quantum entanglement can be produced between thermal states with nearly the maximum Bell-inequality violation even when the temperatures of both modes approach infinity.

minor corrections, acknowledgments added, Phys.Rev.Lett., in press

References in corpus (12)

• Quantum key distribution using gaussian-modulated coherent states
• Nonlocality of Einstein-Podolsky-Rosen State in Wigner Representation
• Subsystem Purity as an Enforcer of Entanglement
• Entanglement of a Mesoscopic Field with an Atom induced by Photon Graininess in a Cavity
• Quantum nonlocality test for continuous-variable states with dichotomic observables
• High Temperature Macroscopic Entanglement
• Using weak nonlinearity under decoherence for macroscopic-entanglement generation and quantum computation
• Macroscopic thermal entanglement due to radiation pressure
• Nonclassical Properties of Coherent States
• Inequivalence of pure state ensembles for open quantum systems: the preferred ensembles are those that are physically realizable
• Test of quantum nonlocality for cavity fields
• Bell-inequality violation with "thermal" radiation

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• Coarsening Measurement References and the Quantum-to-Classical Transition
• Generating and Revealing a Quantum Superposition of Electromagnetic Field Binomial States in a Cavity
• Quantum teleportation between "particle-like" and "field-like" qubits using hybrid entanglement under decoherence effects
• Characterizations and Quantifications of Macroscopic Quantumness and Its Implementations using Optical Fields
• Quantum superpositions and entanglement of thermal states at high temperatures and their applications to quantum information processing
• Testing non-local realism with entangled coherent states
• Phase Space Structure of Generalized Gaussian Cat States
• Non-classicality of optomechanical devices in experimentally realistic operating regimes
• Violations of Bell's inequality for Gaussian states with homodyne detection and nonlinear interactions
• Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom
• Using macroscopic entanglement to close the detection loophole in Bell inequality
• Bell inequality tests using asymmetric entangled coherent states in asymmetric lossy environments
• Decoherence of Highly Mixed Macroscopic Quantum Superpositions
• Detecting the degree of macroscopic quantumness using an overlap measurement
• Bell inequality test with entanglement between an atom and a coherent state in a cavity
• Violation of Bell's inequalities with pre-amplified homodyne detection
• Universal Continuous Variable Quantum Computation Without Cooling
• Genuine multipartite nonlocality of entangled thermal states
• Universal quantum computing with thermal state bosonic systems
• Non-Markovian environment induced Schrödinger cat state transfer in an optical Newton's cradle
• Hot Schrödinger Cat States
• A neutron diffraction study of macroscopically entangled proton states in the high temperature phase of the KHCO3 crystal at 340 K
• Mesoscopic and macroscopic quantum correlations in photonic, atomic and optomechanical systems
• Qubit Mediated Time Robust Entangling of Oscillators in Thermal Environments
• Classicalization of Quantum State of Detector by Amplification Process
• An efficient prescription to find the eigenfunctions of point interactions Hamiltonians
• Gravitational time dilation induced decoherence during spontaneous emission
• Degree of Fuzziness in Coarsened Measurement References
• Production of entanglement with highly-mixed states