814 citations · 2.5k across the 21 of their papers we have counts for
9 papers · 1 filter
Testing Bell's inequality in constantly coupled Josephson circuits by effective single-qubit operations
L. F. Wei, Yu-xi Liu, Franco Nori
In superconducting circuits with interbit untunable (e.g., capacitive) couplings, ideal local quantum operations cannot be exactly performed on individual Josephson qubits. Here we…
Quantum computation with Josephson-qubits by using a current-biased information bus
L. F. Wei, Yu-xi Liu, Franco Nori
We propose an effective scheme for manipulating quantum information stored in a superconducting nanocircuit. The Josephson qubits are coupled via their separate interactions with a…
Kraus representation of damped harmonic oscillator and its application
Yu-xi Liu, Sahin Kaya Ozdemir, Adam Miranowicz +1
By definition, the Kraus representation of a harmonic oscillator suffering from the environment effect, modeled as the amplitude damping or the phase damping, is directly given by…
Tomographic measurements on superconducting qubit states
Yu-xi Liu, L. F. Wei, Franco Nori
We propose an approach to reconstruct any superconducting charge qubit state by using quantum state tomography. This procedure requires a series of measurements on a large enough n…
Preparation of macroscopic quantum superposition states of a cavity field via coupling to a superconducting charge qubit
Yu-xi Liu, L. F. Wei, Franco Nori
We propose how to generate macroscopic quantum superposition states using a microwave cavity containing a superconducting charge qubit. Based on the measurement of charge states, w…
Generation of nonclassical photon states using a superconducting qubit in a microcavity
Yu-xi Liu, L. F. Wei, Franco Nori
Based on the interaction between the radiation field and a superconductor, we propose a way to engineer quantum states using a SQUID charge qubit inside a microcavity. This device…