Project Description

Entanglement and encoding in discrete frequency bins – essentially a quantum analogue of wavelength-division multiplexing – represents a relatively new degree of freedom for quantum information with photons. Potential advantages include generation of high dimensional units of quantum information (qudits), which can carry multiple qubits per photon, robust transmission over fiber, frequency parallelism and routing, and compatibility with on-chip implementations, as well as hyperentanglement with other photonic degrees, e.g., time-frequency hyperentanglement. Experiments at Purdue and elsewhere have recently demonstrated frequency bin entanglement with on-chip optical microresonator photon pair sources. Purdue has also collaborated with Oak Ridge National Lab on realization of quantum gates for frequency bin entangled photons. The proposed project seeks to advance the science and technology of the new subfield of frequency-encoded photons for quantum information processing. Topics of interest include but are not limited to: generation of frequency-bin entanglement, hyperentanglement in frequency, time, and/or space, and multi-photon entangled states; protocols and algorithms to certify and exploit frequency bin entanglement in higher dimensions; entanglement classification in chemical reactions; and applications in near-term quantum information and quantum simulation. Opportunities to collaborate on photonic integration supporting this research are also anticipated.

Start Date 

Late spring, summer, or early fall 2020

Postdoc Qualifications 

Experimental experience with quantum optics and photonics and familiarity with quantum information concepts preferred.

Co-advisors 

Andrew Weiner
amw@purdue.edu
Distinguished Professor of Electrical and Computer Engineering
https://engineering.purdue.edu/~amw/templates/index.html  

Sabre Kais 
kais@purdue.edu
Professor of Chemistry; courtesy appointment as Professor of Physics and Computer Science
https://www.chem.purdue.edu/kais/ 

Collaborator 

Joseph Lukens
lukensjm@ornl.gov
Oak Ridge National Laboratory

References 

"Quantum optical microcombs," M. Kues, C. Reimer, J.M. Lukens, W.J. Munro, A.M. Weiner, D.J. Moss, and R. Morandotti, Nature Photonics 13, 170-179 (2019). 

"High-dimensional optical quantum logic in large operational spaces," P. Imany, J.A. Jaramillo-Villegas, M.S. Alshaykh J.M. Lukens, O.D. Odele, A.J. Moore, D.E. Leaird, M. Qi, and A.M. Weiner, npj Quantum Information 5, article no. 59 (2019).

“50-GHz-spaced comb of high-dimenstional frequency-bin entangled photons from an on-chip silicon nitride microresonator,” P. Imany, J.A. Jaramillo-Villegas, O.O. Odele, K. Han, D.E. Leaird, J.M. Lukens, P. Lougovski, M. Qi, and A.M. Weiner, Optics Express 26, 1825-1840 (2018).

“Quantum Information for Quantum Chemistry,” Sabre Kais, Adv. Chem. Phys. 154, (2014).

“Entanglement Classifier in Chemical Reactions,” J. Li and S. Kais, Sci. Adv. 5, 5283 (2019).