TY - JOUR
T1 - Practical Route to Entanglement-Assisted Communication over Noisy Bosonic Channels
AU - Shi, Haowei
AU - Zhang, Zheshen
AU - Zhuang, Quntao
N1 - Funding Information:
This research is sponsored by the Army Research Office and is accomplished under Grant No. W911NF-19-1-0418. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation herein. Z.Z. acknowledges the National Science Foundation, Grant No. CCF-1907918. Q.Z. and Z.Z. also acknowledge the University of Arizona for support. Q.Z. acknowledges Boulat Bash, Saikat Guha, Jeffrey Shapiro, and Nicolas Cerf for discussions. The authors are also grateful for the comments from the anonymous referee, which greatly improved the paper.
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/2
Y1 - 2020/2
N2 - Entanglement offers substantial advantages in quantum information processing, but loss and noise hinder its application in practical scenarios. Although it has been well known for decades that the classical communication capacity of lossy and noisy bosonic channels can be significantly enhanced by entanglement, no practical encoding and decoding schemes are available to realize any entanglement-enabled advantage. Here, we report structured encoding and decoding schemes for such an entanglement-assisted communication scenario. Specifically, we show that phase encoding on an entangled two-mode squeezed vacuum state saturates the entanglement-assisted classical communication capacity of a very noisy channel and overcomes the fundamental limit on covert communication that exists without the assistance of entanglement. We then construct receivers for optimum hypothesis-testing protocols with discrete phase modulation and for optimum noisy phase-estimation protocols with continuous phase modulation. Our results pave the way for entanglement-assisted communication and sensing in the radio-frequency and microwave spectral ranges.
AB - Entanglement offers substantial advantages in quantum information processing, but loss and noise hinder its application in practical scenarios. Although it has been well known for decades that the classical communication capacity of lossy and noisy bosonic channels can be significantly enhanced by entanglement, no practical encoding and decoding schemes are available to realize any entanglement-enabled advantage. Here, we report structured encoding and decoding schemes for such an entanglement-assisted communication scenario. Specifically, we show that phase encoding on an entangled two-mode squeezed vacuum state saturates the entanglement-assisted classical communication capacity of a very noisy channel and overcomes the fundamental limit on covert communication that exists without the assistance of entanglement. We then construct receivers for optimum hypothesis-testing protocols with discrete phase modulation and for optimum noisy phase-estimation protocols with continuous phase modulation. Our results pave the way for entanglement-assisted communication and sensing in the radio-frequency and microwave spectral ranges.
UR - http://www.scopus.com/inward/record.url?scp=85082769051&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85082769051&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.13.034029
DO - 10.1103/PhysRevApplied.13.034029
M3 - Article
AN - SCOPUS:85082769051
VL - 13
JO - Physical Review Applied
JF - Physical Review Applied
SN - 2331-7019
IS - 3
M1 - 034029
ER -