Optical Computing

Warit Asavanant, Akira Furusawa

Many of the proof-of-principle experiments in quantum optics have been carried out using table-top free-space optics. While they provide good testbeds for optical quantum optics experiments, to build actual devices and quantum computers, we have to move to the integrated optics where reproducibility and stability are more reliable. In this chapter, we review the developments of the integrated optics for optical quantum computer with the main focus on their applications in continuous-variable optical quantum computation.

Thomas J. Naughton, Damien Woods

Bryana Lynn Woo

Physical unclonable functions (PUFs) are devices which are easily probed but difficult to predict.Optical PUFs have been discussed within the literature, with traditional optical PUFs typically using spatial light modulators, coherent illumination, and scattering volumes; however, these systems can be large, expensive, and difficult to maintain alignment in practical conditions.We propose and demonstrate a new kind of optical PUF based on computational imaging and compressive sensing to address these challenges with traditional optical PUFs.This work describes the design, simulation, and prototyping of this computational optical PUF (COPUF) that utilizes incoherent polychromatic illumination passing through an additively manufactured refracting optical polymer element.We demonstrate the ability to pass information through a COPUF using a variety of sampling methods, including the use of compressive sensing.The sensitivity of the COPUF system is also explored.We explore non-traditional PUF configurations enabled by the COPUF architecture.The double COPUF system, which employees two serially connected COPUFs, is proposed and analyzed as a means to authenticate and communicate between two entities that have previously agreed to communicate.This configuration enables estimation of a message inversion key without the calculation of individual COPUF inversion keys at any point in the PUF life cycle.Our results show that it is possible to construct inexpensive optical PUFs using computational imaging.This could lead to new uses of PUFs in places where electrical PUFs cannot be utilized effectively, as low cost tags and seals, and potentially as authenticating and communicating devices.

Bahram Jalali, Madhuri Suthar, Mohamad Asghari +1 more

Wei Fang-bo

In today's information era,computer has become an important tool in man's life and work.The continuous development of science and technology make the requirements for computer higher and higher.However,the shortcomings and disadvantages of electronics computer limit its further development.And electronics computer based on optical bistability devices,making use of the fundamental characteristics of light,without the shortcomings and disadvantages of electronics computer,has the excellent performance that electronic computer can't surpass.In recent decades,with the rapid nonlinear optical development,a major breakthrough in research of optical bistability makes the research and production of optical computer possible.