Minimum error probability of quantum illumination
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › fagfællebedømt
Quantum illumination is a technique for detecting the presence of a target in a noisy environment by means of a
quantum probe. We prove that the two-mode squeezed vacuum state is the optimal probe for quantum illumination
in the scenario of asymmetric discrimination, where the goal is to minimize the decay rate of the probability of a
false positive with a given probability of a false negative. Quantum illumination with two-mode squeezed vacuum
states offers a 6 dB advantage in the error probability exponent compared to illumination with coherent states.
Whether more advanced quantum illumination strategies may offer further improvements had been a longstanding
open question. Our fundamental result proves that nothing can be gained by considering more exotic quantum
states, such as, e.g., multimode entangled states. Our proof is based on a fundamental entropic inequality for the
noisy quantum Gaussian attenuators. We also prove that without access to a quantum memory, the optimal probes
for quantum illumination are the coherent states.
quantum probe. We prove that the two-mode squeezed vacuum state is the optimal probe for quantum illumination
in the scenario of asymmetric discrimination, where the goal is to minimize the decay rate of the probability of a
false positive with a given probability of a false negative. Quantum illumination with two-mode squeezed vacuum
states offers a 6 dB advantage in the error probability exponent compared to illumination with coherent states.
Whether more advanced quantum illumination strategies may offer further improvements had been a longstanding
open question. Our fundamental result proves that nothing can be gained by considering more exotic quantum
states, such as, e.g., multimode entangled states. Our proof is based on a fundamental entropic inequality for the
noisy quantum Gaussian attenuators. We also prove that without access to a quantum memory, the optimal probes
for quantum illumination are the coherent states.
Originalsprog | Engelsk |
---|---|
Artikelnummer | 012101 |
Tidsskrift | Physical Review A |
Vol/bind | 98 |
Udgave nummer | 1 |
Antal sider | 5 |
ISSN | 2469-9926 |
DOI | |
Status | Udgivet - 2 jul. 2018 |
Links
- https://arxiv.org/abs/1802.02158
Accepteret manuskript
ID: 200290128