| Issue |
EPL
Volume 127, Number 3, August 2019
|
|
|---|---|---|
| Article Number | 30007 | |
| Number of page(s) | 7 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/127/30007 | |
| Published online | 20 September 2019 | |
Quantum state transfer between nitrogen vacancy center ensembles in hybrid quantum system
1 School of Physics, Huazhong University of Science and Technology - Wuhan 430074, China
2 Quantum Optics Lab. Department of Physics, COMSATS University - Islamabad, Pakistan
3 Department of Physics, Fatima Jinnah Women University - The Mall, Rawalpindi, Pakistan
(a) hammad_phy@yahoo.com
(b) gqge@hust.edu.cn (corresponding author)
Received: 26 April 2019
Accepted: 2 August 2019
We propose a system for quantum state transfer (QST) between two nitrogen-vacancy center ensembles (NVEs) coupled to two transmission line resonators (TLRs) via flux qubits (FQs). We study the transfer of an arbitrary quantum state by various system's controlling parameters i.e., the coupling between nitrogen vacancy ensembles g, the coupling strength between resonators λ for both the resonant and non-resonant interactions in the presence of decoherence. Furthermore, we investigate the dynamics of QST for three different cases, i.e., 
, 
and 
in detail. It is found that the quantum state can be efficiently transferred between NVEs for suitable values of controlling parameters. We observe that the fidelity of quantum state transfer is about 
in all cases for short operational time 
while in the presence of decoherence fidelity is above 
. This reveals that decoherence has no prominent effect on quantum state transfer.
PACS: 03.67.-a – Quantum information / 61.72.jd – Vacancies / 03.67.Lx – Quantum computation architectures and implementations
© EPLA, 2019
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