Cooper-pair-based photon entanglement without isolated emitters
نویسندگان
چکیده
Alex Hayat,1 Hae-Young Kee,2,3 Kenneth S. Burch,2,3,4,5 and Aephraim M. Steinberg2,4 1Department of Electrical Engineering, Technion, Haifa 32000, Israel 2Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7 3Centre for Quantum Materials, University of Toronto, 60 St. George Street, Toronto, Ontario, Canada M5S 1A7 4Centre for Quantum Information and Quantum Control and the Institute for Optical Sciences, University of Toronto, 60 St. George Street, Toronto, Ontario, Canada M5S 1A7 5Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USA (Received 25 April 2013; revised manuscript received 30 January 2014; published 10 March 2014)
منابع مشابه
ar X iv : 0 80 8 . 06 33 v 1 [ qu an t - ph ] 5 A ug 2 00 8 Maximum entangled states and quantum Teleportation via Single Cooper pair Box
Abstract: In this contribution, we study a single Cooper pair box interacts with a single cavity mode. We show the roles played by the detuning parameters and charged capacities on the degree of entanglement. For large values of the detuning parameter the survival entanglement increases on the expanse of the degree of entanglement. We generate a maximum entangled state and use it to perform the...
متن کاملSideband transitions and two-tone spectroscopy of a superconducting qubit strongly coupled to an on-chip cavity.
Sideband transitions are spectroscopically probed in a system consisting of a Cooper pair box strongly but nonresonantly coupled to a superconducting transmission line resonator. When the Cooper pair box is operated at the optimal charge bias point, the symmetry of the Hamiltonian requires a two-photon process to access sidebands. The observed large dispersive ac-Stark shifts in the sideband tr...
متن کاملEntanglement detection from conductance measurements in carbon nanotube cooper pair splitters.
Spin-orbit interaction provides a spin filtering effect in carbon nanotube based Cooper pair splitters that allows us to determine spin correlators directly from current measurements. The spin filtering axes are tunable by a global external magnetic field. By a bending of the nanotube, the filtering axes on both sides of the Cooper pair splitter become sufficiently different that a test of enta...
متن کاملCoherent state quantum key distribution based on entanglement sudden death
A method for quantum key distribution (QKD) using entangled coherent states is discussed which is designed to provide key distribution rates and transmission distances surpassing those of traditional entangled photon pair QKD by exploiting entanglement sudden death. The method uses entangled electromagnetic signal states of ‘macroscopic’ average photon numbers rather than single photon or entan...
متن کاملGenerating entanglement between quantum dots with different resonant frequencies based on dipole-induced transparency
We describe a method for generating entanglement between two spatially separated dipoles coupled to optical microcavities. The protocol works even when the dipoles have different resonant frequencies and radiative lifetimes. This method is particularly important for solid-state emitters, such as quantum dots, which suffer from large inhomogeneous broadening. We show that high fidelities can be ...
متن کامل