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11 papers · 2 filters
Absolute magnetometry based on quantum beats in diamond nitrogen-vacancy centers
Kejie Fang, Victor M. Acosta, Charles Santori +5
We demonstrate an absolute magnetometer immune to temperature fluctuation and strain inhomogeneity, based on quantum beats in the ground state of nitrogen-vacancy centers in diamon…
Deterministic generation of Gaussian pure state in quasi-local dissipative system
Yusuke Ikeda, Naoki Yamamoto
This paper shows that an arbitrary Gaussian pure state can be deterministically generated in a dissipative open system that has quasi-local interactions between the subsystems and…
Decoherence-free linear quantum subsystems
Naoki Yamamoto
This paper provides a general theory for characterizing and constructing a decoherence-free (DF) subsystem for an infinite dimensional linear open quantum system. The main idea is…
Optimising the Solovay-Kitaev algorithm
Pham Tien Trung, Rodney Van Meter, Dominic Horsman
The Solovay-Kitaev algorithm is the standard method used for approximating arbitrary single-qubit gates for fault-tolerant quantum computation. In this paper we introduce a techniq…
Time-optimal Unitary Operations in Ising Chains II: Unequal Couplings and Fixed Fidelity
A. Carlini, T. Koike
We analytically determine the minimal time and the optimal control laws required for the realization, up to an assigned fidelity and with a fixed energy available, of entangling qu…
Brachistochrone of Entanglement for Spin Chains
A. Carlini, T. Koike
We analytically investigate the role of entanglement in time-optimal state evolution as an appli- cation of the quantum brachistochrone, a general method for obtaining the optimal…