Controlled-phase Gate for Photons Based on Stationary Light

TY - JOUR

T1 - Controlled-phase Gate for Photons Based on Stationary Light

AU - Iakoupov, Ivan

AU - Sørensen, Anders Søndberg

AU - Borregaard, Johannes

PY - 2018/1/4

Y1 - 2018/1/4

N2 - We propose a method to induce strong effective interactions between photons mediated by an atomic ensemble. To achieve this, we use the so-called stationary light effect to enhance the interaction. Regardless of the single-atom coupling to light, the interaction strength between the photons can be enhanced by increasing the total number of atoms. For sufficiently many atoms, the setup can be viable as a controlled-phase gate for photons. We derive analytical expressions for the fidelities for two modes of gate operation: deterministic and heralded conditioned on the presence of two photons at the output.

AB - We propose a method to induce strong effective interactions between photons mediated by an atomic ensemble. To achieve this, we use the so-called stationary light effect to enhance the interaction. Regardless of the single-atom coupling to light, the interaction strength between the photons can be enhanced by increasing the total number of atoms. For sufficiently many atoms, the setup can be viable as a controlled-phase gate for photons. We derive analytical expressions for the fidelities for two modes of gate operation: deterministic and heralded conditioned on the presence of two photons at the output.

U2 - 10.1103/PhysRevLett.120.010502

DO - 10.1103/PhysRevLett.120.010502

M3 - Journal article

C2 - 29350945

SN - 0031-9007

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

M1 - 010502

ER -