Jove
Visualize
Contact Us

Related Experiment Videos

Minimum energy requirements for quantum computation.

Julio Gea-Banacloche1

  • 1Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA.

Physical Review Letters
|November 22, 2002
PubMed
Summary

Researchers derived a minimum energy cost for quantum computing operations. This energy bound is based on the need for classical approximations in controlling quantum bits (qubits), impacting large-scale quantum computations.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Large Collective Power Enhancement in Dissipative Charging of a Quantum Battery.

Physical review lettersยท2025
See all related articles
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

Area of Science:

  • Quantum Computing
  • Quantum Information Theory
  • Thermodynamics

Background:

  • Quantum computers promise revolutionary computational power but require precise control of quantum bits (qubits).
  • Understanding the fundamental physical limits, such as energy consumption, is crucial for developing scalable quantum technologies.
  • Current quantum operations rely on control mechanisms that must approximate classical behavior.

Purpose of the Study:

  • To derive a fundamental lower bound on the energy required for elementary logical operations in a quantum computer.
  • To establish this bound based on the physical constraints of controlling quantum systems.
  • To assess the implications of this energy requirement for the feasibility of large-scale quantum computation.

Main Methods:

  • Theoretical derivation of an energy lower bound for quantum operations.
  • Analysis of the physical requirements for controlling quantum bits (qubits) with classical approximations.
  • Consideration of the impact of control system accuracy and operation time on energy expenditure.

Main Results:

  • A fundamental lower bound on the energy cost of an elementary quantum logical operation was established.
  • This energy bound is contingent upon the necessity of treating control systems as classical approximations.
  • The derived bound is expected to be broadly applicable across different qubit technologies and operational conditions.

Conclusions:

  • The energy cost of quantum computation is fundamentally limited by the classical nature of control mechanisms.
  • This finding has significant implications for the energy efficiency and scalability of future quantum computers.
  • The derived bound provides a critical benchmark for the development of energy-efficient quantum technologies.

Related Experiment Videos