A CNOT gate in a glass chip

Paul M. Alsing; Grigoriy Kreymerman; Warner A. Miller

doi:10.1117/12.2192739

21 May 2015 A CNOT gate in a glass chip

Paul M. Alsing, Grigoriy Kreymerman, Warner A. Miller

Proceedings Volume 9500, Quantum Information and Computation XIII; 95001F (2015) https://doi.org/10.1117/12.2192739
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

In our earlier work we posited that simple quantum gates and quantum algorithms can be designed utilizing the diffraction phenomena of a photon within a multiplexed holographic element. The quantum eigenstates we use are the photons transverse linear momentum (LM) as measured by the number of waves of tilt across the aperture. Two properties of linear optical quantum computing (LOQC) within the circuit model make this approach attractive. First, any conditional measurement can be commuted in time with any unitary quantum gate; and second, photon entanglement can be encoded as a superposition state of a single photon in a higher-dimensional state space afforded by LM. We describe here our experimental results for construction a controlled NOT (CNOT) gate logic within a holographic medium, and present the quantum state tomography for this device. Our theoretical and numerical results indicate that OptiGrates photo-thermal refractive (PTR) glass is an enabling technology. This work has been grounded on coupled-mode theory and numerical simulations, all with parameters consistent with PTR glass. We discuss the strengths (high efficiencies, robustness to environment) and limitations (scalability, crosstalk) of this technology. While not scalable, the utility and robustness of such optical elements for broader quantum information processing applications can be substantial.

Citation Download Citation

Paul M. Alsing, Grigoriy Kreymerman, and Warner A. Miller "A CNOT gate in a glass chip", Proc. SPIE 9500, Quantum Information and Computation XIII, 95001F (21 May 2015); https://doi.org/10.1117/12.2192739

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available