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30 papers · 2 filters
Overview of Quantum Memory Protection and Adiabaticity Induction by Fast-Signal Control
Jun Jing, Lian-Ao Wu
A quantum memory or information processing device is subject to disturbance from its surrounding environment or inevitable leakage due to its contact with other systems. To tackle…
Detecting metrologically useful entanglement in the vicinity of Dicke states
Iagoba Apellaniz, Bernd Lücke, Jan Peise +2
We present a method to verify the metrological usefulness of noisy Dicke states of a particle ensemble with only a few collective measurements, without the need for a direct measur…
Nonperturbative Leakage Elimination Operators and Control of a Three-Level System
Jun Jing, Lian-Ao Wu, Mark Byrd +3
Dynamical decoupling operations have been shown to reduce errors in quantum information processing. Leakage from an encoded subspace to the rest of the system space is a particular…
Quantum Simulation of Pairing Hamiltonians with Nearest-Neighbor Interacting Qubits
Zhixin Wang, Xiu Gu, Lian-Ao Wu +1
Although a universal quantum computer is still far from reach, the tremendous advances in controllable quantum devices, in particular with solid-state systems, make it possible to…
Parity-dependent State Engineering and Tomography in the ultrastrong coupling regime
S. Felicetti, T. Douce, G. Romero +2
Reaching the strong coupling regime of light-matter interaction has led to an impressive development in fundamental quantum physics and applications to quantum information processi…
Fermionic Models with Superconducting Circuits
U. Las Heras, L. García-Álvarez, A. Mezzacapo +2
We propose a method for the efficient quantum simulation of fermionic systems with superconducting circuits. It consists in the suitable use of Jordan-Wigner mapping, Trotter decom…