Cooling Mechanism for a Nonmechanical Resonator by Periodic Coupling to a Cooper Pair Box

Journal Article · Fri Aug 26 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.097204· OSTI ID:20699378

Zhang, P; Wang, Y D; Sun, C P ^[1]

---

1. Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100080 (China)

We propose and study an active cooling mechanism for the nanomechanical resonator (NAMR) based on periodical coupling to a Cooper pair box (CPB), which is implemented by a designed series of magnetic flux pluses threading through the CPB. When the initial phonon number of the NAMR is not too large, this cooling protocol is efficient in decreasing the phonon number by 2 to 3 orders of magnitude. Our proposal is theoretically universal in cooling various boson systems of a single mode. It can be specifically generalized to prepare the nonclassical state of the NAMR.

• OSTI ID: 20699378
• Journal Information: Physical Review Letters, Vol. 95, Issue 9; Other Information: DOI: 10.1103/PhysRevLett.95.097204; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSONS
COOLING
COOPER PAIRS
MAGNETIC FLUX
NANOSTRUCTURES
PERIODICITY
PHONONS
RESONATORS