Table 1 The elements of the density matrix without QFC

From: Polarization insensitive frequency conversion for an atom-photon entanglement distribution via a telecom network

 

\(\left| {{\mathrm{HH}}} \right\rangle\)

\(\left| {{\mathrm{HV}}} \right\rangle\)

\(\left| {{\mathrm{VH}}} \right\rangle\)

\(\left| {{\mathrm{VV}}} \right\rangle\)

\(\left\langle {{\mathrm{HH}}} \right|\)

0.42

−0.05 + 0.03i

−0.03 + 0.07i

0.34

\(\left\langle {{\mathrm{HV}}} \right|\)

−0.05 to 0.03i

0.04

−0.04i

0.01 + 0.01i

\(\left\langle {{\mathrm{VH}}} \right|\)

−0.03 to 0.07i

0.04i

0.08

−0.07 + 0.03i

\(\left\langle {{\mathrm{VV}}} \right|\)

0.34

0.01 to 0.01i

−0.07–0.03i

0.46

  1. The values are calculated from \(\left\langle {mn\left| {U_{\theta _0}^\dagger \rho _{{\mathrm{S}},AS}U_{\theta _0}} \right|m\prime n\prime } \right\rangle\) for m, n, m′, n′ = {H, V}
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