2008/04/14 by M. P. Blencowe, M P Blencowe, A. D. Armour +1
Physics and Astronomy · #Force Microscopy Techniques and Applications #Mechanical and Optical Resonators #Quantum Electrodynamics and Casimir Effect #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1088/1367-2630/10/9/095005
published as New J. Phys. 10, 095005 (2008) · Submitted to New Journal of Physics: Special Issue "Mechanical Systems at the Quantum Limit"
arxiv created 2008/04/14 · openalex publication_date 2008/09/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We describe a possible implementation of the nanomechanical quantum superposition generation and detection scheme described in the preceding, companion paper (Armour A D and Blencowe M P 2008 New. J. Phys. 10 095004). The implementation is based on the circuit quantum electrodynamics (QED) set-up, with the addition of a mechanical degree of freedom formed out of a suspended, doubly-clamped segment of the superconducting loop of a dc SQUID located directly opposite the centre conductor of a coplanar waveguide (CPW). The relative merits of two SQUID based qubit realizations are addressed, in particular a capacitively coupled charge qubit and inductively coupled flux qubit. It is found that both realizations are equally promising, with comparable qubit–mechanical resonator mode as well as qubit–microwave resonator mode coupling strengths.