Photonic states with large and fixed photon numbers, such as Fock states,
enable quantum-enhanced metrology but remain an experimentally elusive
resource. A potentially simple, deterministic and scalable way to generate
these states consists of fully exciting $N$ quantum emitters equally coupled to
a common photonic reservoir, which leads to a collective decay known as Dicke
superradiance. The emitted $N$-photon state turns out to be a highly entangled
multimode state, and to characterise its metrological properties in this work
we: (i) develop theoretical tools to compute the Quantum Fisher Information of
general multimode photonic states; (ii) use it to show that Dicke superradiant
photons in 1D waveguides achieve Heisenberg scaling, which can be saturated by
a parity measurement; (iii) and study the robustness of these states to
experimental limitations in state-of-art atom-waveguide QED setups.
Description
[1805.00712] Quantum metrology with one-dimensional superradiant photonic states
%0 Generic
%1 paulisch2018quantum
%A Paulisch, V.
%A Perarnau-Llobet, M.
%A González-Tudela, A.
%A Cirac, J. I.
%D 2018
%K journalclubqo
%T Quantum metrology with one-dimensional superradiant photonic states
%U http://arxiv.org/abs/1805.00712
%X Photonic states with large and fixed photon numbers, such as Fock states,
enable quantum-enhanced metrology but remain an experimentally elusive
resource. A potentially simple, deterministic and scalable way to generate
these states consists of fully exciting $N$ quantum emitters equally coupled to
a common photonic reservoir, which leads to a collective decay known as Dicke
superradiance. The emitted $N$-photon state turns out to be a highly entangled
multimode state, and to characterise its metrological properties in this work
we: (i) develop theoretical tools to compute the Quantum Fisher Information of
general multimode photonic states; (ii) use it to show that Dicke superradiant
photons in 1D waveguides achieve Heisenberg scaling, which can be saturated by
a parity measurement; (iii) and study the robustness of these states to
experimental limitations in state-of-art atom-waveguide QED setups.
@misc{paulisch2018quantum,
abstract = {Photonic states with large and fixed photon numbers, such as Fock states,
enable quantum-enhanced metrology but remain an experimentally elusive
resource. A potentially simple, deterministic and scalable way to generate
these states consists of fully exciting $N$ quantum emitters equally coupled to
a common photonic reservoir, which leads to a collective decay known as Dicke
superradiance. The emitted $N$-photon state turns out to be a highly entangled
multimode state, and to characterise its metrological properties in this work
we: (i) develop theoretical tools to compute the Quantum Fisher Information of
general multimode photonic states; (ii) use it to show that Dicke superradiant
photons in 1D waveguides achieve Heisenberg scaling, which can be saturated by
a parity measurement; (iii) and study the robustness of these states to
experimental limitations in state-of-art atom-waveguide QED setups.},
added-at = {2018-05-03T11:27:34.000+0200},
author = {Paulisch, V. and Perarnau-Llobet, M. and González-Tudela, A. and Cirac, J. I.},
biburl = {https://www.bibsonomy.org/bibtex/262e942842b287a8780ba0835a667519a/klhamm},
description = {[1805.00712] Quantum metrology with one-dimensional superradiant photonic states},
interhash = {704abadbf582b3454d7e08f7abfdfc11},
intrahash = {62e942842b287a8780ba0835a667519a},
keywords = {journalclubqo},
note = {cite arxiv:1805.00712Comment: 14 pages, 4 figures},
timestamp = {2018-05-03T11:27:34.000+0200},
title = {Quantum metrology with one-dimensional superradiant photonic states},
url = {http://arxiv.org/abs/1805.00712},
year = 2018
}