Parametric amplification by coupled flux qubits
نویسندگان
چکیده
منابع مشابه
Coherent operation of coupled superconducting flux qubits
We study the quantum operation of coupled superconducting flux qubits under a microwave irradiation. The flux qubits can be described as magnetic dipole moments in the limit of weak microwave field amplitude consistent with usual experimental situations. With the Hamiltonian for coupled qubits under a microwave field, we show that a strong coupling enables to realize the high performance contro...
متن کاملFast two-bit operations in inductively coupled flux qubits
J. Q. You,1,2,* Y. Nakamura,1,3,4,† and Franco Nori1,5,‡ 1Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi 351-0198, Japan 2Department of Physics and National Laboratory for Surface Physics, Fudan University, Shanghai 200433, China 3NEC Fundamental and Environmental Research Laboratories, Tsukuba, Ibaraki 305-8051, Japan 4CREST, Japan Science and Techn...
متن کاملEntanglement of distant flux qubits by swapping
The mechanism for the entanglement of two flux qubits each interacting with single mode electromagnetic field created in a separate quantum cavity is discussed. By performing a Bell state measurements (BSM) on photons we find the two qubits in an entangled state depending on the result of the BSM. The proposed scheme allows for a control of entanglement of flux qubits.
متن کاملCoupled Mode Theory of Electron-Beam Parametric Amplification
A theory of parametric amplification in a filamentary electron beam by transverse fields is developed in coupled mode form. Space charge effects are neglected. In addition to beam modes at the signal frequency, beam modes at frequencies wn=w+wv, n=O, ±1, ±2· ··,where wp is the pump frequency, are coupled together. A discussion of the general form of the equations is given and reveals the circum...
متن کاملHeralded amplification of photonic qubits.
We demonstrate postselection free heralded qubit amplification for Time-Bin qubits and single photon states in an all-fibre, telecom-wavelength, scheme that highlights the simplicity, stability and potential for fully integrated photonic solutions. Exploiting high-efficiency superconducting detectors, the gain, fidelity and the performance of the amplifier are studied as a function of loss. We ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2014
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.4873719