814 citations · 2.5k across the 19 of their papers we have counts for
6 papers · 1 filter
Quantum Thermodynamic Cycles and quantum heat engines
H. T. Quan, Yu-xi Liu, C. P. Sun +1
In order to describe quantum heat engines, here we systematically study isothermal and isochoric processes for quantum thermodynamic cycles. Based on these results the quantum vers…
Scalable superconducting qubit circuits using dressed states
Yu-xi Liu, C. P. Sun, Franco Nori
We study a coupling/decoupling method between a superconducting qubit and a data bus that uses a controllable time-dependent electromagnetic field (TDEF). As in recent experiments,…
Switchable resonant coupling of flux qubits
M. Grajcar, Yu-xi Liu, Franco Nori +1
We propose a coupling scheme, where two or more flux qubits with different eigenfrequencies share Josephson junctions with a coupler loop devoid of its own quantum dynamics. Switch…
Producing cluster states in charge qubits and flux qubits
Tetsufumi Tanamoto, Yu-xi Liu, Shinobu Fujita +2
We propose a method to efficiently generate cluster states in charge qubits, both semiconducting and superconducting, as well as flux qubits. We show that highly-entangled cluster…
Macroscopic Quantum Criticality in a Circuit QED
Y. D. Wang, H. T. Quan, Yu-xi Liu +2
Cavity quantum electrodynamic (QED) is studied for two strongly-coupled charge qubits interacting with a single-mode quantized field, which is provided by a on-chip transmission li…
Probing tiny motions of nanomechanical resonators: classical or quantum mechanical?
L. F. Wei, Yu-xi Liu, C. P. Sun +1
We propose a spectroscopic approach to probe tiny vibrations of a nanomechanical resonator (NAMR), which may reveal classical or quantum behavior depending on the decoherence-induc…