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15 papers · 2 filters
Quantum information storage and state transfer based on spin systems
Z. Song, C. P. Sun
The idea of quantum state storage is generalized to describe the coherent transfer of quantum information through a coherent data bus. In this universal framework, we comprehensive…
Elementary Operations
James Baugh, Andrei Galiautdinov, David Ritz Finkelstein +2
A Clifford algebra over the binary field 2 = {0,1} is a second-order classical logic that is substantially richer than Boolean algebra. We use it as a bridge to a Clifford algebrai…
Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement
R. Xin, Z. Song, C. P. Sun
We study the correlation function and concurrence for the eigenstates with zero spin of engineered Heisenberg models to explore the entanglement property. It is shown that the tota…
Encoding a logical qubit into physical qubits
B. Zeng, D. L. Zhou, Z. Xu +2
We propose two protocols to encode a logical qubit into physical qubits relying on common types of qubit-qubit interactions in as simple forms as possible. We comment on its experi…
Cooling of Nanomechanical Resonator Based on Periodical Coupling to Cooper Pair Box
P. Zhang, Y. D. Wang, C. P. Sun
We propose and study an active cooling mechanism for the nanomechanical resonator (NAMR) based on periodical coupling to a Cooper pair box (CPB), which is implemented by a designed…
Effective boson-spin model for nuclei ensemble based universal quantum memory
Z. Song, P. Zhang, T. Shi +1
We study the collective excitation of a macroscopic ensemble of polarized nuclei fixed in a quantum dot. Under the approximately homogeneous condition that we explicitly present in…