2134/9978380.v1
Patrick Navez
Artur Sowa
Alexandre Zagoskin
Entangling continuous variables with a qubit array
2019
Loughborough University
quant-ph
Fluids & Plasmas
Physical Sciences
Chemical Sciences
2019-10-15 08:02:03
article
https://repository.lboro.ac.uk/articles/Entangling_continuous_variables_with_a_qubit_array/9978380
We show that an array of qubits embedded in a waveguide can emit entangled
pairs of microwave photon beams. The quadratures obtained from a homodyne
detection of these outputs beams form a pair of correlated continuous variables
similarly to the EPR experiment. The photon pairs are produced by the decay of
plasmon-like collective excitations in the qubit array. The maximum intensity
of the resulting beams is only bounded by the number of emitters. We calculate
the excitation decay rate both into a continuum of photon state and into a
one-mode cavity. We also determine the frequency of Rabi-like oscillations
resulting from a detuning.