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6 papers · 1 filter
Non-Markovian Dynamics and Entanglement in Quantum Brownian Motion
K. Shiokawa
Dynamical aspects of quantum Brownian motion in a low temperature environment are investigated. We give a systematic calculation of quantum entanglement among two Brownian oscillat…
Quantum Brownian Motion of a Macroscopic Object in a General Environment
Chung-Hsien Chou, B. L. Hu, Ting Yu
For the purpose of understanding the quantum behavior such as quantum decoherence, fluctuations, dissipation, entanglement and teleportation of a mesoscopic or macroscopic object i…
Exact Master Equation and Quantum Decoherence of Two Coupled Harmonic Oscillators in a General Environment
Chung-Hsien Chou, Ting Yu, B. L. Hu
In this paper we derive an exact master equation for two coupled quantum harmonic oscillators interacting via bilinear coupling with a common environment at arbitrary temperature m…
Splitting times of doubly quantized vortices in dilute Bose-Einstein condensates
J. A. M. Huhtamäki, M. Möttönen, T. Isoshima +2
Recently, the splitting of a topologically created doubly quantized vortex into two singly quantized vortices was experimentally investigated in dilute atomic cigar-shaped Bose-Ein…
Insecurity of Quantum Bit Commitment with Secret Parameters
Chi-Yee Cheung
The impossibility proof of unconditionally secure quantum bit commitment is crucially dependent on the assertion that Bob is not allowed to generate probability distributions unkno…
Controlled Quantum Secret Sharing
Chi-Yee Cheung
We present a new protocol in which a secret multiqubit quantum state is shared by players and controllers, where is the encoding state of a quantum secret s…