Aharonov-Bohm Phase is Locally Generated Like All Other Quantum Phases
Physical Review Letters American Physical Society (APS) 125:4 (2020) 040401
Quantum simulation with hybrid tensor networks
ArXiv 2007.00958 (2020)
Variational quantum simulation of general processes
Physical Review Letters American Physical Society 125:1-3 (2020) 010501
Abstract:
Variational quantum algorithms have been proposed to solve static and dynamic problems of closed many-body quantum systems. Here we investigate variational quantum simulation of three general types of tasks鈥攇eneralized time evolution with a non-Hermitian Hamiltonian, linear algebra problems, and open quantum system dynamics. The algorithm for generalized time evolution provides a unified framework for variational quantum simulation. In particular, we show its application in solving linear systems of equations and matrix-vector multiplications by converting these algebraic problems into generalized time evolution. Meanwhile, assuming a tensor product structure of the matrices, we also propose another variational approach for these two tasks by combining variational real and imaginary time evolution. Finally, we introduce variational quantum simulation for open system dynamics. We variationally implement the stochastic Schr枚dinger equation, which consists of dissipative evolution and stochastic jump processes. We numerically test the algorithm with a 6-qubit 2D transverse field Ising model under dissipation.
Dielectric Microsphere Coupled to a Plasmonic Nanowire: A Self鈥怉ssembled Hybrid Optical Antenna
Advanced Optical Materials 8 (11), 1901672
Abstract:
Decoherence of massive superpositions induced by coupling to a quantized gravitational field
(2020)