814 citations · 2.5k across the 21 of their papers we have counts for
7 papers · 2 filters
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…
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…
Quantum tomography for solid state qubits
Yu-xi Liu, L. F. Wei, Franco Nori
We propose a method for the tomographic reconstruction of qubit states for a general class of solid state systems in which the Hamiltonians are represented by spin operators, e.g.,…