Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.8K
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
1.8K
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

8.6K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
8.6K
¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

1.7K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.7K
Design Example01:23

Design Example

694
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
694
Discrete-time Fourier transform01:26

Discrete-time Fourier transform

1.5K
The Discrete-Time Fourier Transform (DTFT) is an essential mathematical tool for analyzing discrete-time signals, converting them from the time domain to the frequency domain. This transformation allows for examining the frequency components of discrete signals, providing insights into their spectral characteristics. In the DTFT, the continuous integral used in the continuous-time Fourier transform is replaced by a summation to accommodate the discrete nature of the signal.
One of the notable...
1.5K
Electromagnetic Waves01:30

Electromagnetic Waves

10.3K
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
10.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Spatial Profiling Identified Senescent Cancer-Associated Fibroblasts Localized in the Border Region of Human Pancreatic Ductal Adenocarcinoma.

Cellular and molecular gastroenterology and hepatology·2026
Same author

Micromanipulation of organic nanofibers for the fabrication of miniaturized photonic devices.

Applied optics·2026
Same author

Investigation of the Linker-Length Preferences of Pantetheine Probes in the Cross-Linking Reactions Between Adenylation Enzymes and Carrier Proteins.

Chembiochem : a European journal of chemical biology·2026
Same author

Clinical performance of the multiplex solid-phase "Direct Strip PCR" for infectious uveitis: a multicenter diagnostic accuracy study.

Japanese journal of ophthalmology·2026
Same author

Tattoo-Associated Sarcoid-like Uveitis: A Multicenter Registry Study.

Biomedicines·2026
Same author

Predictors of Post-Definitive Chemoradiotherapy Esophageal Stricture in T2-T4 Esophageal Squamous Cell Carcinoma: : A Single-Center Retrospective Study.

Journal of gastrointestinal cancer·2026
Same journal

Tension on dsDNA bound to ssDNA-RecA filaments may play an important role in driving efficient and accurate homology recognition and strand exchange.

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Amplitude-phase coupling drives chimera states in globally coupled laser networks [Phys. Rev. E 91, 040901(R) (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Erratum: Shapes of sedimenting soft elastic capsules in a viscous fluid [Phys. Rev. E 92, 033003 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Erratum: Attenuation of excitation decay rate due to collective effect [Phys. Rev. E 90, 022142 (2014)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Role of connectivity and fluctuations in the nucleation of calcium waves in cardiac cells [Phys. Rev. E 92, 052715 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Lattice Boltzmann approach for complex nonequilibrium flows [Phys. Rev. E 92, 043308 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
See all related articles

Related Experiment Video

Updated: Apr 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

8.9K

Code-division multiple-access multiuser demodulator by using quantum fluctuations.

Yosuke Otsubo1, Jun-Ichi Inoue2, Kenji Nagata1

  • 1Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-5861, Japan.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|August 15, 2014
PubMed
Summary
This summary is machine-generated.

Quantum fluctuations in code-division multiple-access (CDMA) demodulators show performance comparable to conventional methods. This quantum approach offers a universal feature for information retrieval across various probabilistic processing tasks.

More Related Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

13.9K
Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

10.1K

Related Experiment Videos

Last Updated: Apr 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

8.9K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

13.9K
Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

10.1K

Area of Science:

  • Quantum Information Science
  • Statistical Mechanics
  • Information Theory

Background:

  • Code-division multiple-access (CDMA) is a channel access method used in telecommunications.
  • Demodulation in CDMA systems typically relies on thermal fluctuations.
  • Bayesian inference provides a framework for probabilistic information processing.

Purpose of the Study:

  • To investigate the average-case performance of a CDMA multiuser demodulator utilizing quantum fluctuations.
  • To compare the performance of quantum-enhanced CDMA demodulation with conventional thermal fluctuation-based methods.
  • To explore the universality of the relationship between information retrieval quality and transverse field amplitude.

Main Methods:

  • Employing quantum fluctuations within a transverse field of an infinite-range Ising spin glass model.
  • Utilizing Bayesian inference for message demodulation.
  • Evaluating performance metrics through statistical mechanics.

Main Results:

  • Quantum-fluctuation-based CDMA multiuser demodulators achieve performance comparable to conventional thermal fluctuation-based systems on average.
  • A "universal feature" is identified relating information retrieval quality to transverse field amplitude.
  • This universality is observed in diverse probabilistic information processing applications.

Conclusions:

  • Quantum fluctuations can be effectively utilized in CDMA multiuser demodulators, offering performance on par with classical methods.
  • The observed "universal feature" suggests potential for unified quantum approaches in probabilistic information processing.
  • This research bridges quantum mechanics, statistical mechanics, and information theory for advanced communication systems.