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Statistical exchange-coupling errors and the practicality of scalable silicon donor qubits
Yang Song, S. Das Sarma
Recent experimental efforts have led to considerable interest in donor-based localized electron spins in Si as viable qubits for a scalable silicon quantum computer. With the use o…
Role of dissipation in realistic Majorana nanowires
Chun-Xiao Liu, Jay D. Sau, S. Das Sarma
We carry out a realistic simulation of Majorana nanowires in order to understand the latest high- quality experimental data [H. Zhang et al., arXiv:1603.04069 (2016)] and, in the p…
Intrinsic decoherence in isolated quantum systems
Yang-Le Wu, Dong-Ling Deng, Xiaopeng Li +1
We study the intrinsic, disorder-induced decoherence of an isolated quantum system under its own dynamics. Specifically, we investigate the characteristic time scale (i.e., the dec…
Environmental noise effects on entanglement fidelity of exchange-coupled semiconductor spin qubits
Robert E. Throckmorton, Edwin Barnes, S. Das Sarma
We investigate the effect of magnetic field and charge noise on the generation of entanglement between two Heisenberg exchange-coupled electron spins in a double quantum dot. We fo…
Statistical Bubble Localization with Random Interactions
Xiaopeng Li, Dong-Ling Deng, Yang-Le Wu +1
We study one-dimensional spinless fermions with random interactions, but without any on-site disorder. We find that random interactions generically stabilize a many-body localized…
Conductance spectroscopy of nontopological-topological superconductor junctions
F. Setiawan, William S. Cole, Jay D. Sau +1
We calculate the zero-temperature differential conductance of a voltage-biased one-dimensional junction between a nontopological and a topological superconductor for arbitr…