Skip to main content

Reset your password

Please enter the e-mail address you used to register to reset your password

Note: The verification e-mail to change your password should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder.

If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org

Registration complete

Thank you for registering with Physics World
If you'd like to change your details at any time, please visit My account

Close
Quantum

Quantum

Quantum Mpemba effect hints at faster quantum computers

13 Sep 2023 Anna Demming
Cartoon showing two cats starting off at slightly different high temperatures, then after a period of time (represented by a clock), the initially more energetic cat is more relaxed (lying down and snoozing), while the initially less energetic cat is merely somewhat relaxed (lying down)
Two cool(ing) cats: Two systems of quantum dots connected to a heat bath (represented here by cats), one with a current flowing and the other in an equilibrium state, experience a "crossing" as the quantum dot relaxes towards a steady state. (Courtesy: KyotoU/Hisao Hayakawa)
When the Tanzanian schoolboy Erasto Mpemba asked a visiting lecturer why hot water freezes faster th

You’ve reached the limit of what you can view on Physics World without registering

If you already have an account on Physics World, then please sign in to continue reading

If you do not yet have an account, please register so you can

  • Access more than 20 years of online content
  • Choose which e-mail newsletters you would like to receive
Anna Demming is a science journalist based in Bristol, UK
Read previous

Rare-earth atom can make a quantum repeater at telecom wavelengths
Read next

Light waves made to collide as if they were massive objects

Discover more from Physics World

Related jobs

Related events

Copyright © 2024 by IOP Publishing Ltd and individual contributors