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32 papers · 2 filters
Superradiance transition in a system with a single qubit and a single oscillator
S. Ashhab
We consider the phase-transition-like behaviour in the Rabi model containing a single two-level system, or qubit, and a single harmonic oscillator. The system experiences a sudden…
Quantum Fisher information as signature of superradiant quantum phase transition
T. L. Wang, L. N. Wu, W. Yang +3
The single-mode Dicke model is well-known to undergo a quantum phase transition from the so-called normal phase to the supperradiant phase (hereinafter called the "superradiant qua…
Time-reversed two-photon interferometry for phase super-resolution
Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi +2
We observed two-photon phase super-resolution in an unbalanced Michelson interferometer with classical Gaussian laser pulses. Our work is a time-reversed version of a two-photon in…
Non-Markovian Dynamics Impact on the Foundations of Statistical Mechanics
Heng-Na Xiong, Ping-Yuan Lo, Wei-Min Zhang +2
The foundations of statistical mechanics, namely how equilibrium hypothesis emerges microscopically from quantum theory, is explored through investigating the environment-induced q…
Environmental dynamics, correlations, and the emergence of noncanonical equilibrium states in open quantum systems
Jake Iles-Smith, Neill Lambert, Ahsan Nazir
Quantum systems are invariably open, evolving under surrounding influences rather than in isolation. Standard open quantum system methods eliminate all information on the environme…
Entanglement swapping and testing quantum steering into the past via collective decay
Yueh-Nan Chen, Shin-Liang Chen, Neill Lambert +3
We propose a scheme to realize entanglement swapping via superradiance, entangling two distant cavities without a direct interaction. The successful Bell-state-measurement outcomes…