Abstract
Electron spins in solids are promising candidates for quantum memories for superconducting qubits because they can have long coherence times, large collective couplings, and many qubits could be encoded into spin waves of a single ensemble. We demonstrate the coupling of electron-spin ensembles to a superconducting transmission-line cavity at strengths greatly exceeding the cavity decay rates and comparable to the spin linewidths. We also perform broadband spectroscopy of ruby () at millikelvin temperatures and low powers, using an on-chip feedline. In addition, we observe hyperfine structure in diamond centers.
- Received 18 June 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.140501
© 2010 The American Physical Society
Viewpoint
Towards superconductor-spin ensemble hybrid quantum systems
Published 27 September 2010
Ensembles of dilute spin impurities in condensed matter systems can be accessed using microelectronic circuits and therefore may offer a way for long-term storage and enhanced processing of quantum information.
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