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What classicality? Decoherence and Bohr's classical concepts
classicality Decoherence Bohr's classical concepts
2010/10/20
Niels Bohr famously insisted on the indispensability of what he termed “classical concepts.” In the context of the decoherence program, on the other hand, it has become fashionable to talk about the “...
In this paper we review Castagnino’s contributions to the foundations of quantum mechanics. First, we recall his work on quantum decoherence in closed systems, and the proposal of a general framework ...
The Bolztmann echo (BE) is a measure of irreversibility and sensitivity to perturbations for non-isolated systems. Recently, different regimes of this quantity were described for chaotic systems. Ther...
The qubit states decoherence in antiferromagnet-based nuclear spin model of quantum register
Easy-axis antiferromagnet decoherence indirect coupling inhomogeneous magnetic field nu-clear spin quantum register and qubit
2010/3/10
This study deals with the further development of nuclear spin model of scalable quantum register, which presents the one-dimensional chain of the magnetic atoms with nuclear spins 1/2, substituting th...
Decoherence due to an excited state quantum phase transition in a two-level boson model
Decoherence excited state quantum phase transition two-level boson model
2010/3/10
The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modelled as a scalar two-level boson system that can go through either first order or c...
Decoherence as a signature of an excited state quantum phase transition
Decoherence excited state quantum phase transition
2010/3/10
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics. We explore how the decoherence process is affected by the presenc...
Decoherence, Einselection and Classicality of a Macroscopic Quantum Superposition generated by Quantum Cloning
Decoherence Einselection and Classicality Macroscopic Quantum Superposition Quantum Cloning
2010/4/8
The high resilience to de-coherence shown by a recently discovered Macroscopic Quantum Superposition (MQS) generated by a quantum injected optical parametric amplifier (QI-OPA) and involving a number ...
Decoherence in Bose-Einstein Condensates: towards Bigger and Better Schroedinger Cats
Decoherence Bose-Einstein Condensates Schroedinger Cats
2010/10/18
We consider a quantum superposition of Bose-Einstein condensates in two immiscible
internal states. A decoherence rate for the resulting Schr¨odinger cat is calculated and
shown to be a significant ...
Normal Ordering Solution to Quantum Dissipation and Its
Induced Decoherence
normal ordering technique quantum decoherence
2007/8/15
2001Vol.36No.3pp.331-334DOI:
Normal Ordering Solution to Quantum Dissipation and Its
Induced Decoherence
JIN Guang-Ri,1 ZHOU Duan-Lu,1 LIU Yu-Xi,2
YI Xue-Xi1 and SUN Chang-Pu1
...
Entropy Squeezing in Coupled Field-Superconducting Charge Qubit
with Intrinsic Decoherence
entropy squeezing intrinsic decoherence superconducting charge qubit
2007/8/15
2007Vol.48No.1pp.63-66DOI:
Entropy Squeezing in Coupled Field-Superconducting Charge Qubit
with Intrinsic Decoherence
YAN Xue-Qun, SHAO Bin, and ZOU Jian
Department of ...
Suppression of Phase and Amplitude Damping Decoherence in a
Three-Level Atom in Λ-Configuration Using Bang-Bang Controls
bang-bang operation general decoherence three-level system
2007/8/15
2007Vol.48No.1pp.71-74DOI:
Suppression of Phase and Amplitude Damping Decoherence in a
Three-Level Atom in Λ-Configuration Using Bang-Bang Controls
WANG Yan-Hui,1 LIU Xiao-Shu,1 a...
Decoherence of Entangled States Calculated by a Systematic Approximate Method
decoherence coherent-state two-state
2007/8/15
2007Vol.47No.5pp.791-800DOI:
Decoherence of Entangled States Calculated by a Systematic Approximate Method
LIU Tao,1 FAN Yun-Xia,1 HUANG Shu-Weng,1 WANG Ke-Lin,1,2 and WANG Yi2,3...
Intrinsic Decoherence on Two-Qubit Heisenberg XX Chain
Heisenberg chain fidelity intrinsic decoherence entanglement
2007/8/15
2007Vol.47No.5pp.811-815DOI:
Intrinsic Decoherence on Two-Qubit Heisenberg XX Chain
HE Zheng-Hong, XIONG Zu-Hong, and HU Dong-Mei
School of Physics, Southwest University...
Quantum Decoherence of Macroscopic
Object Induced by Inner Environments: an Exactly Solvable Model
quantum decoherence macroscopic object inner environments
2007/8/15
2007Vol.47No.2pp.229-234DOI:
Quantum Decoherence of Macroscopic
Object Induced by Inner Environments: an Exactly Solvable Model
ZHENG Li1,2 and ZHENG Tai-Yu3
1 College o...
Stability of Decoherence-Free Subspaces under Stochastic Phase Fluctuations
decoherence-free subspaces stochastic phase fluctuations
2007/8/15
2006Vol.46No.3pp.447-452DOI:
Stability of Decoherence-Free Subspaces under Stochastic Phase Fluctuations
ZENG Hao-Sheng, NIE Jian-Jun, and KUANG Le-Man
Department of Phy...