Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Springer proceedings in physics

Composite Logic Gate Element and Multiplexer for Optical Computing and Optical Communications

Joseph W. Haus, C. M. Bowden, Chi C. Sung

Published Jan 1, 1986• 1 citation
Publisher
DOI
10.1007/978-3-642-46580-2_21

Related papers

Composite Logic Gate Element and Multiplexer for Optical Computing and Optical Communication

Joseph W. Haus, C. M. Bowden, Chi C. Sung

Mirrorless (cavityless) optical bistability (OB), due to temperature-dependent renormalization of the absorption peak of the bound exciton resonance in CdS has been observed and interpreted1 in terms of coupling between the internal field intensity and the temperature in the nonlinear material. It was shown2 that the heat conductivity boundary conditions determine the conditions for bistability of a sample of the material. In fact, we showed earlier that when the boundary conditions at the ends of the sample are such that the heat resistance at the exit end HL = h1/3 where ho is the heat resistance at the entrance face, two hysteresis curves result, one clockwise with increasing input intensity at lower incident fields due to increasing absorption and the other at higher field values due to decreasing absorption which is counter-clockwise, Figures 1a and 1b.

Topical Meeting on Optical Bistability (OB)•Jan 1, 1985•1 citation

Digital Logic Elements for Optical Computing

Frank A. P. Tooley

Springer eBooks•Jan 1, 1988•0 citations

Backtracking method applicable to optical quantum calculation

Kimihiro Saito

Optical quantum devices are promoting the development not only of communication but also of quantum computation using optical quantum gates. Here, we will explain how to replace circuits consisting of gates such as NOT, AND, etc. used in classical logic calculations with quantum calculation gates. These classical gates can be expressed as NOT and CNOT of quantum computing gates. We show how to express these quantum gates as optical devices using the behavior of the polarization of discrete photons. Next, we describe the backtracking method of quantum circuits utilizing the reversibility of quantum gates. Since classical gates are not unitary, we use probabilistic methods that rely on measurements. In a typical classical gate, there are multiple inputs corresponding to a certain output, so backtracking requires tracing multiple states. The quantum bit representation, which can represent superposition states, is suitable for this purpose. As an application example, we explain how to backtrack integer multipliers and perform factorization. In configuration using quantum gates, one measurement quantum bit is required for each element, resulting in a large number of state bits. However, by reusing bits that are no longer needed, it was possible to construct a circuit with a number of state bits proportional to the number of bits for the integer multiplicand. We simulated an integer multiplier circuit by combining classical gates, and backtrack the circuit to derive two factors from a composite number represented by quantum bits. We performed simulations on a PC and succeeded in factorizing a 100-bit composite number.

Industrial Optical Devices and Systems (ODS)•Oct 4, 2024•1 citation

Optical Logic Devices

Harvard Scott Hinton, John R. Erickson, Tom J. Cloonan +3 more

Springer eBooks•Jan 1, 1993•1 citation

Recent Advances on All-Optical Logic Gates

변영태, 김재헌, Nam‐Gyu Park +2 more

•Jan 1, 2009•0 citations

Backtracking method applicable to optical quantum calculation and integer factorization

Kimihiro Saito

Optical quantum devices are promoting the development not only of communication but also of quantum computation using optical quantum gates. We will explain how to replace circuits consisting of gates such as NOT and AND used in classical logic calculations with quantum calculation gates. These classical gates can be expressed as NOT and CNOT of quantum computing gates. We show how to express these quantum gates as optical devices using the behavior of the polarization of discrete photons. Next, we describe the backtracking method of quantum circuits utilizing the reversibility of quantum gates. As classical gates are not unitary, we use probabilistic methods that rely on measurements. In a typical classical gate, there are multiple inputs corresponding to a certain output, so backtracking requires tracing multiple states. The quantum bit representation, which can represent superposition states, is suitable for this purpose. As an application example, we explain how to backtrack integer multipliers and perform factorization. In a configuration using quantum gates, one measurement quantum bit is required for each element, resulting in a large number of state bits. However, by reusing bits that are no longer needed, it was possible to construct a circuit with a number of state bits proportional to the number of bits for the integer multiplicand. We simulated an integer multiplier circuit by combining classical gates and backtracked the circuit to derive two factors from a composite number represented by quantum bits. By performing a simulation on a PC, we succeeded in factorizing a 100-bit composite number, subject to the condition that it is a product of two prime numbers close to less than 2m1−1 and 2m2−1, where m1 and m2 are integers. We compare our method with the calculation using satisfiability (SAT) for the factoring problem.

Optical Engineering•Apr 14, 2025•1 citation
Mirrorless (cavityless) optical bistability (OB), due to temperature-dependent renormalization of the absorption peak of the bound exciton resonance in CdS has been observed and interpreted1 in terms of coupling between the internal field intensity and the temperature in the nonlinear material. It was shown2 that the heat conductivity boundary conditions determine the conditions for bistability of a sample of the material. In fact, we showed earlier that when the boundary conditions at the ends of the sample are such that the heat resistance at the exit end HL = h1/3 where ho is the heat resistance at the entrance face, two hysteresis curves result, one clockwise with increasing input intensity at lower incident fields due to increasing absorption and the other at higher field values due to decreasing absorption which is counter-clockwise, Figures 1a and 1b.
Optical quantum devices are promoting the development not only of communication but also of quantum computation using optical quantum gates. Here, we will explain how to replace circuits consisting of gates such as NOT, AND, etc. used in classical logic calculations with quantum calculation gates. These classical gates can be expressed as NOT and CNOT of quantum computing gates. We show how to express these quantum gates as optical devices using the behavior of the polarization of discrete photons. Next, we describe the backtracking method of quantum circuits utilizing the reversibility of quantum gates. Since classical gates are not unitary, we use probabilistic methods that rely on measurements. In a typical classical gate, there are multiple inputs corresponding to a certain output, so backtracking requires tracing multiple states. The quantum bit representation, which can represent superposition states, is suitable for this purpose. As an application example, we explain how to backtrack integer multipliers and perform factorization. In configuration using quantum gates, one measurement quantum bit is required for each element, resulting in a large number of state bits. However, by reusing bits that are no longer needed, it was possible to construct a circuit with a number of state bits proportional to the number of bits for the integer multiplicand. We simulated an integer multiplier circuit by combining classical gates, and backtrack the circuit to derive two factors from a composite number represented by quantum bits. We performed simulations on a PC and succeeded in factorizing a 100-bit composite number.
Optical quantum devices are promoting the development not only of communication but also of quantum computation using optical quantum gates. We will explain how to replace circuits consisting of gates such as NOT and AND used in classical logic calculations with quantum calculation gates. These classical gates can be expressed as NOT and CNOT of quantum computing gates. We show how to express these quantum gates as optical devices using the behavior of the polarization of discrete photons. Next, we describe the backtracking method of quantum circuits utilizing the reversibility of quantum gates. As classical gates are not unitary, we use probabilistic methods that rely on measurements. In a typical classical gate, there are multiple inputs corresponding to a certain output, so backtracking requires tracing multiple states. The quantum bit representation, which can represent superposition states, is suitable for this purpose. As an application example, we explain how to backtrack integer multipliers and perform factorization. In a configuration using quantum gates, one measurement quantum bit is required for each element, resulting in a large number of state bits. However, by reusing bits that are no longer needed, it was possible to construct a circuit with a number of state bits proportional to the number of bits for the integer multiplicand. We simulated an integer multiplier circuit by combining classical gates and backtracked the circuit to derive two factors from a composite number represented by quantum bits. By performing a simulation on a PC, we succeeded in factorizing a 100-bit composite number, subject to the condition that it is a product of two prime numbers close to less than 2m1−1 and 2m2−1, where m1 and m2 are integers. We compare our method with the calculation using satisfiability (SAT) for the factoring problem.