18 citations · 78 across the 18 of their papers we have counts for
14 papers · 1 filter
Mimicking states with limited resources: passing quantum quiz via global control
P. V. Pyshkin, E. Ya. Sherman, A. Gábris +1
Precise control of quantum systems with a moderate number of degrees of freedom, being of interest for application in quantum technologies, becomes experimentally feasible. Various…
Self-protected adiabatic quantum computation
P. V. Pyshkin, Da-Wei Luo, Lian-Ao Wu
Recent experiments show the existence of collective decoherence in quantum systems. We study the possibility of quantum computation in decoherence free subspace which is robust aga…
Polaron formation in a spin chain by measurement-induced imaginary Zeeman field
P. V. Pyshkin, E. Ya. Sherman, Lian-Ao Wu
We present a high-rate projective measurement-based approach for controlling non-unitary evolution of a quantum chain of interacting spins. In this approach, we demonstrate that lo…
Tunable Tradeoff between Quantum and Classical Computation via Nonunitary Zeno-like Dynamics
P. V. Pyshkin, A. Gábris, Da-Wei Luo +2
We propose and analyze a nonunitary variant of the continuous time Grover search algorithm based on frequent Zeno-type measurements. We show that the algorithm scales similarly to…
Quantum mechanics and speed limit of ultrafast local control in spin chains
P. V. Pyshkin, E. Ya. Sherman, Lian-Ao Wu
We study optimization of fidelity for ultrafast transformation of a spin chain via external control of a local exchange coupling. We show that infidelity of such a process can be d…
Non-adiabatic transformation of a spin-chain geometry via local control
P. V. Pyshkin, E. Ya. Sherman, Lian-Ao Wu
We consider transformation from a closed to an open spin chain and vice versa produced by changing single link strength in a pair of neighboring spins. We show that in the non-adia…
Quantum state identification of qutrits via a nonlinear protocol
P. V. Pyshkin, A. Gábris, O. Kálmán +2
We propose a probabilistic quantum protocol to realize a nonlinear transformation of qutrit states, which by iterative applications on ensembles can be used to distinguish two type…
High-fidelity non-adiabatic cutting and stitching of a spin chain via local control
P. V. Pyshkin, E. Ya. Sherman, J. Q. You +1
We propose and analyze, focusing on non-adiabatic effects, a technique of manipulating quantum spin systems based on local 'cutting' and 'stitching' of the Heisenberg exchange coup…
Nondeterministic quantum computation via ground state cooling and ultrafast Grover algorithm
P. V. Pyshkin, Da-Wei Luo, J. Q. You +1
Over the last decades, there have been many proposals for quantum computation. One of the promising candidates is adiabatic quantum computation (AQC). The central idea of AQC is ab…
Two-component Dirac equation
Da-Wei Luo, P. V. Pyshkin, Ting Yu +3
We provide an alternative approach to relativistic dynamics based on the Feshbach projection technique. Instead of directly studying the Dirac equation, we derive a two-component e…
Quantum simulator for many-body electron-electron Coulomb interaction with ion traps
Da-Wei Luo, P. V. Pyshkin, Michele. Modugno +3
We propose an analog quantum simulator that uses ion traps to realize the many-body electron-electron Coulomb interaction of an electron gas. This proposal maps a system that is di…
Dynamical invariants in non-Markovian quantum state diffusion equation
Da-Wei Luo, P. V. Pyshkin, Chi-Hang Lam +4
We find dynamical invariants for open quantum systems described by the non-Markovian quantum state diffusion (QSD) equation. In stark contrast to closed systems where the dynamical…
Expedited Holonomic Quantum Computation in Decoherence-Free Subspace
P. V. Pyshkin, Da-wei Luo, Jun Jing +2
Holonomic quantum computation (HQC) may not show its full potential in quantum speedup due to the prerequisite of a long coherent runtime imposed by the adiabatic condition. Here w…
Ground state cooling of quantum systems via a one-shot measurement
P. V. Pyshkin, Da-Wei Luo, J. Q. You +1
We prove that there exists a family of quantum systems that can be cooled to their ground states by a one-shot projective measurement on the ancillas coupled to these systems. Cons…