946 citations
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12 papers · 1 filter
Quantum state estimation with informationally overcomplete measurements
Huangjun Zhu
We study informationally overcomplete measurements for quantum state estimation so as to clarify their tomographic significance as compared with minimal informationally complete me…
Non-Canonical Statistics of a Spin-Boson Model: Theory and Exact Monte-Carlo Simulations
Chee Kong Lee, Jianshu Cao, Jiangbin Gong
Equilibrium canonical distribution in statistical mechanics assumes weak system-bath coupling (SBC). In real physical situations this assumption can be invalid and equilibrium quan…
Protecting and Enhancing Spin Squeezing via Continuous Dynamical Decoupling
Adam Zaman Chaudhry, Jiangbin Gong
Realizing useful quantum operations with high fidelity is a two-task quantum control problem wherein decoherence is to be suppressed and desired unitary evolution is to be executed…
Micromotion in trapped atom-ion systems
Le Huy Nguyen, Amir Kalev, Murray D. Barrett +1
We examine the validity of the harmonic approximation, where the radio-frequency ion trap is treated as a harmonic trap, in the problem regarding the controlled collision of a trap…
Knowledge and ignorance in incomplete quantum state tomography
Y. S. Teo, H. Zhu, B. -G. Englert +2
Quantum state reconstruction on a finite number of copies of a quantum system with informationally incomplete measurements does, as a rule, not yield a unique result. We derive a r…
Phase-space characterization of complexity in quantum many-body dynamics
Vinitha Balachandran, Giuliano Benenti, Giulio Casati +1
We propose a phase-space Wigner harmonics entropy measure for many-body quantum dynamical complexity. This measure, which reduces to the well known measure of complexity in classic…