.png){kind=icon}
.png){kind=icon}
Return
Robust quantum state transfer using tunable couplers
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevB.91.144509.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
We analyze the transfer of a quantum state between two resonators connected by a superconducting transmission line. Nearly perfect state-transfer efficiency can be achieved by using adjustable couplers and destructive interference to cancel the back-reflection into the transmission line at the receiving coupler. We show that the transfer protocol is robust to parameter variations affecting the transmission amplitudes of the couplers. We also show that the effects of the Gaussian filtering, pulse-shape noise, and multiple reflections on the transfer efficiency are insignificant. However, the transfer protocol is very sensitive to frequency mismatch between the two resonators. Moreover, the tunable coupler we considered produces time-varying frequency detuning caused by the changing coupling. This detuning requires an active frequency compensation with an accuracy better than 90% to yield the transfer efficiency above 99%.
Keywords:
SUPERCONDUCTING QUBITS
ATOMIC ENSEMBLES
TELEPORTATION
ENTANGLEMENT
NETWORK
CIRCUITS
PHOTON
SYSTEM
ION
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
3.7
Papers:
15.4W
Citations:
41.0W
