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26 papers · 2 filters
Bell's experiment with intra- and inter-pair entanglement: Single-particle mode entanglement as a case study
S. Ashhab, Koji Maruyama, Caslav Brukner +1
Theoretical considerations of Bell-inequality experiments usually assume identically prepared and independent pairs of particles. Here we consider pairs that exhibit both intra- an…
Qubit-oscillator systems in the ultrastrong-coupling regime and their potential for preparing nonclassical states
S. Ashhab, Franco Nori
We consider a system composed of a two-level system (i.e. a qubit) and a harmonic oscillator in the ultrastrong-coupling regime, where the coupling strength is comparable to the qu…
Phase gate of one qubit simultaneously controlling qubits in a cavity
Chui-Ping Yang, Yu-xi Liu, Franco Nori
We propose how to realize a three-step controlled-phase gate of one qubit simultaneously controlling qubits in a cavity or coupled to a resonator. The two-qubit controlled-…
Robust and scalable optical one-way quantum computation
Hefeng Wang, Chui-Ping Yang, Franco Nori
We propose an efficient approach for deterministically generating scalable cluster states with photons. This approach involves unitary transformations performed on atoms coupled to…
Tunable Electromagnetically Induced Transparency and Absorption with Dressed Superconducting Qubits
Hou Ian, Yu-xi Liu, Franco Nori
Electromagnetically induced transparency and absorption (EIT and EIA) are usually demonstrated by three-level atomic or atom-like systems. In contrast to the usual case, we theoret…
Quantum phase measurement and Gauss sum factorization of large integers in a superconducting circuit
H. T. Ng, Franco Nori
We study the implementation of quantum phase measurement in a superconducting circuit, where two Josephson phase qubits are coupled to the photon field inside a resonator. We show…