Phys. Rev. Lett. 103, 227203 (2009) [4 pages]Ground State Cooling of a Nanomechanical Resonator in the Nonresolved Regime via Quantum InterferenceReceived 19 February 2009; published 25 November 2009 Ground state cooling of a nanomechanical resonator coupled to a superconducting flux qubit is discussed. By inducing quantum interference to cancel unwanted heating excitations, ground state cooling becomes possible in the nonresolved regime. The qubit is modeled as a three-level system in Λ configuration, and the driving fluxes are applied such that the qubit absorption spectrum exhibits electromagnetically induced transparency, thereby canceling the unwanted excitations. As our scheme allows the application of strong cooling fields, fast and efficient cooling can be achieved. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.227203
DOI:
10.1103/PhysRevLett.103.227203
PACS:
85.85.+j, 07.10.Cm, 42.50.Gy, 85.25.-j
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