83 citations · 395 across the 15 of their papers we have counts for
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Quantum Algorithm, Gaussian Sums, and Topological Invariants
K. Shiokawa
Certain quantum topological invariants of three manifolds can be written in the form of the Gaussian sum. It is shown that such topological invariants can be approximated efficient…
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…
Non-Markovian Quantum Error Deterrence by Dynamical Decoupling in a General Environment
K. Shiokawa, B. L. Hu
A dynamical decoupling scheme for the deterrence of errors in the non-Markovian (usually corresponding to low temperature, short time, and strong coupling) regimes suitable for qub…
Qubit Decoherence and Non-Markovian Dynamics at Low Temperatures via an Effective Spin-Boson Model
K. Shiokawa, B. L. Hu
Quantum Brownian oscillator model (QBM), in the Fock-space representation, can be viewed as a multi-level spin-boson model. At sufficiently low temperature, the oscillator degrees…
Dynamical Decoupling Using Slow Pulses: Efficient Suppression of 1/f Noise
K. Shiokawa, D. A. Lidar
The application of dynamical decoupling pulses to a single qubit interacting with a linear harmonic oscillator bath with spectral density is studied, and compared to the Ohmi…
On Multistep Bose-Einstein Condensation in Anisotropic Traps
K. Shiokawa
Multistep Bose-Einstein condensation of an ideal Bose gas in anisotropic harmonic atom traps is studied. In the presence of strong anisotropy realized by the different trap frequen…