Quantum transducers: Integrating transmission lines and nanomechanical resonators via charge qubits
- 10 February 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 73 (2), 022318
- https://doi.org/10.1103/physreva.73.022318
Abstract
We propose a mechanism to interface a transmission line resonator (TLR) with a nanomechanical resonator (NAMR) by commonly coupling them to a charge qubit, a Cooper-pair box with a controllable gate voltage. Integrated in this quantum transducer or simple quantum network, the charge qubit plays the role of a controllable quantum node coherently exchanging quantum information between the TLR and NAMR. With such an interface, a quasiclassical state of the NAMR can be created by controlling a single-mode classical current in the TLR. Alternatively, a “Cooper pair” coherent output through the transmission line can be driven by a single-mode classical oscillation of the NAMR.Keywords
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