Enhancing Optomechanical Coupling via the Josephson Effect
T. T. Heikkilä, F. Massel, J. Tuorila, R. Khan, M. A. Sillanpää
DOI 10.1103/PhysRevLett.112.203603 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Cavity optomechanics is showing promise for studying quantum mechanics in large systems. However, the smallness of the radiation-pressure coupling is a serious hindrance. Here we show how the charge tuning of the Josephson inductance in a single-Cooper-pair transistor can be exploited to arrange a strong radiation-pressure-type coupling g0 between mechanical and microwave resonators. In a certain limit of parameters, such a coupling can also be seen as a qubit-mediated coupling of two resonators. We show that this scheme allows reaching extremely high g0. Contrary to the recent proposals for exploiting the nonlinearity of a large radiation-pressure coupling, the main nonlinearity in this setup originates from a cross-Kerr type of coupling between the resonators, where the cavity refractive index depends on the phonon number. The presence of this coupling will allow accessing the individual phonon numbers via the measurement of the cavity.
Similar papers
Enhancement of the optomechanical coupling and Kerr nonlinearity using the Josephson capacitance of a Cooper-pair box
similarity 0.94Juuso Manninen et al.
Source status unknown — claims are unverified
Enhancing optomechanical coupling via the Josephson effect
similarity 0.91Tero T. Heikkilä et al. · 2013 · arXiv:1311.3802
Source status unknown — claims are unverified
Strong mechanically induced effects in DC current-biased suspended Josephson junctions
similarity 0.89Thomas McDermott et al.
Source status unknown — claims are unverified
Spectroscopy of capacitively coupled Josephson-junction qubits
similarity 0.88Philip R. Johnson et al.
Source status unknown — claims are unverified
Cooper-pair tunneling in small junctions with tunable Josephson coupling
similarity 0.88Yuichi Harada et al.
Source status unknown — claims are unverified
Resonant Cooper Pair Tunneling: Quantum Noise and Measurement Characteristics
similarity 0.88A. A. Clerk et al. · 2002 · arXiv:cond-mat/0203338
Source status unknown — claims are unverified