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Title: Electro-Optic Frequency Beam Splitters and Tritters for High-Fidelity Photonic Quantum Information Processing

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [1];  [1];  [1];  [2]
  1. Purdue Univ., West Lafayette, IN (United States). School of Electrical and Computer Engineering. Purdue Quantum Center
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Information Science Group. Computational Sciences and Engineering Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Information Science Group. Computational Sciences and Engineering Division; Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education

In this paper, we report the experimental realization of high-fidelity photonic quantum gates for frequency-encoded qubits and qutrits based on electro-optic modulation and Fourier-transform pulse shaping. Our frequency version of the Hadamard gate offers near-unity fidelity (0.99998±0.00003), requires only a single microwave drive tone for near-ideal performance, functions across the entire C band (1530–1570 nm), and can operate concurrently on multiple qubits spaced as tightly as four frequency modes apart, with no observable degradation in the fidelity. For qutrits, we implement a 3×3 extension of the Hadamard gate: the balanced tritter. This tritter—the first ever demonstrated for frequency modes—attains fidelity 0.9989±0.0004. Finally, these gates represent important building blocks toward scalable, high-fidelity quantum information processing based on frequency encoding.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Purdue Univ., West Lafayette, IN (United States)
Sponsoring Organization:
USDOE; ORNL Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; ECCS-1407620
OSTI ID:
1423025
Alternate ID(s):
OSTI ID: 1417418
Journal Information:
Physical Review Letters, Vol. 120, Issue 3; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 89 works
Citation information provided by
Web of Science

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  • Washington D.C. : American Association for the Advancement of Science https://doi.org/10.15488/8242
other January 2016
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Cited By (23)

Quantum Phase Estimation with Time‐Frequency Qudits in a Single Photon journal October 2019
Generation of multiphoton quantum states on silicon journal May 2019
Experimental band structure spectroscopy along a synthetic dimension journal July 2019
Coherent spin-wave processor of stored optical pulses journal February 2019
A controlled-NOT gate for frequency-bin qubits journal March 2019
High-dimensional optical quantum logic in large operational spaces journal July 2019
Quantum optical microcombs journal February 2019
High-dimensional one-way quantum processing implemented on d-level cluster states journal December 2018
Emission spectrum in dissipative cavities coupled with quantum dots journal May 2019
Signatures of many-particle interference journal January 2020
Generating frequency-bin qubits via spontaneous four-wave mixing in a photonic molecule journal October 2019
Robust Architecture for Programmable Universal Unitaries journal January 2020
Exploring the limits of semiconductor-laser-based optical frequency combs journal January 2019
Quantum frequency combs and Hong–Ou–Mandel interferometry: the role of spectral phase coherence journal January 2019
Temporal imaging for ultra-narrowband few-photon states of light journal January 2020
High-dimensional optical quantum logic in large operational spaces text January 2018
A controlled-NOT gate for frequency-bin qubits text January 2018
Simulations of Subatomic Many-Body Physics on a Quantum Frequency Processor text January 2018
Generating frequency-bin qubits via spontaneous four-wave mixing in a photonic molecule text January 2019
Quantum Phase Estimation with Time-Frequency Qudits in a Single Photon text January 2019
Signatures of Many-Particle Interference text January 2019
Quantum frequency combs and Hong-Ou-Mandel interferometry: the role of spectral phase coherence text January 2019
Temporal imaging for ultra-narrowband few-photon states of light text January 2019

Figures / Tables (6)


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