Qubit-induced phonon blockade as a signature of quantum behavior in nanomechanical resonators

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.032101· OSTI ID:21448621

Yuxi, Liu ^[1]; Miranowicz, Adam ^[1]; Gao, Y B ^[2]; Bajer, Jiri ^[3]; Sun, C P ^[4]; Nori, Franco ^[1]

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1. Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198 (Japan)
2. College of Applied Science, Beijing University of Technology, Beijing 100124 (China)
3. Department of Optics, Palacky University, 772 00 Olomouc (Czech Republic)
4. Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China)

The observation of quantized nanomechanical oscillations by detecting femtometer-scale displacements is a significant challenge for experimentalists. We propose that a phonon blockade can serve as a signature of quantum behavior in nanomechanical resonators. In analogy to the photon blockade and Coulomb blockade for electrons, the main idea for phonon blockade is that the second phonon cannot be excited when there is one phonon in the nonlinear oscillator. To realize phonon blockade, a superconducting quantum two-level system is coupled to the nanomechanical resonator and is used to induce the phonon self-interaction. Using Monte Carlo simulations, the dynamics of the induced nonlinear oscillator is studied via the Cahill-Glauber s-parametrized quasiprobability distributions. We show how the oscillation of the resonator can occur in the quantum regime and demonstrate how the phonon blockade can be observed with the currently accessible experimental parameters.

• OSTI ID: 21448621
• Journal Information: Physical Review. A, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevA.82.032101; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
COMPUTERIZED SIMULATION
ELECTRONS
MONTE CARLO METHOD
NANOSTRUCTURES
NONLINEAR PROBLEMS
OSCILLATIONS
OSCILLATORS
PHONONS
PHOTONS
QUANTUM MECHANICS
QUBITS
RESONATORS
BOSONS
CALCULATION METHODS
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
INFORMATION
LEPTONS
MASSLESS PARTICLES
MECHANICS
QUANTUM INFORMATION
QUASI PARTICLES
SIMULATION