Navigation Links
UCSB physicists challenge classical world with quantum-mechanical implementation of 'shell game'
Date:1/31/2011

(Santa Barbara, Calif.) Inspired by the popular confidence trick known as "shell game," researchers at UC Santa Barbara have demonstrated the ability to hide and shuffle "quantum-mechanical peas" microwave single photons under and between three microwave resonators, or "quantized shells."

In a paper published in the Jan. 30 issue of the journal Nature Physics, UCSB researchers show the first demonstration of the coherent control of a multi-resonator architecture. This topic has been a holy grail among physicists studying photons at the quantum-mechanical level for more than a decade.

The UCSB researchers are Matteo Mariantoni, postdoctoral fellow in the Department of Physics; Haohua Wang, postdoctoral fellow in physics; John Martinis, professor of physics; and Andrew Cleland, professor of physics.

According to the paper, the "shell man," the researcher, makes use of two superconducting quantum bits (qubits) to move the photons particles of light between the resonators. The qubits the quantum-mechanical equivalent of the classical bits used in a common PC are studied at UCSB for the development of a quantum super computer. They constitute one of the key elements for playing the photon shell game.

"This is an important milestone toward the realization of a large-scale quantum register," said Mariantoni. "It opens up an entirely new dimension in the realm of on-chip microwave photonics and quantum-optics in general."

The researchers fabricated a chip where three resonators of a few millimeters in length are coupled to two qubits. "The architecture studied in this work resembles a quantum railroad," said Mariantoni. "Two quantum stations two of the three resonators are interconnected through the third resonator which acts as a quantum bus. The qubits control the traffic and allow the shuffling of photons among the resonators."

In a related experiment, the researchers played a more complex game that was inspired by an ancient mathematical puzzle developed in an Indian temple called the Towers of Hanoi, according to legend.

The Towers of Hanoi puzzle consists of three posts and a pile of disks of different diameter, which can slide onto any post. The puzzle starts with the disks in a stack in ascending order of size on one post, with the smallest disk at the top. The aim of the puzzle is to move the entire stack to another post, with only one disk being moved at a time, and with no disk being placed on top of a smaller disk.

In the quantum-mechanical version of the Towers of Hanoi, the three posts are represented by the resonators and the disks by quanta of light with different energy. "This game demonstrates that a truly Bosonic excitation can be shuffled among resonators an interesting example of the quantum-mechanical nature of light," said Mariantoni.


'/>"/>

Contact: Gail Gallessich
gail.g@ia.ucsb.edu
805-893-7220
University of California - Santa Barbara
Source:Eurekalert  

Related biology technology :

1. McGill physicists find a new state of matter in a transistor
2. U of T physicists squeeze light to quantum limit
3. Physicists discover important step for making light crystals
4. Nanophysicists find unexpected magnetic effect
5. NYU physicists find way to explore microscopic systems through holographic video
6. Physicists at UC Santa Barbara make discovery in quantum mechanics
7. U-M physicists create first atomic-scale map of quantum dots
8. Physicists capture first images of atomic spin
9. UBC, Max Planck formalize partnership among worlds top quantum physicists
10. UC Riverside physicists pave the way for graphene-based spin computer
11. Rice physicists discover ultrasensitive microwave detector
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UCSB physicists challenge classical world with quantum-mechanical implementation of 'shell game'
(Date:6/28/2017)... ... ... Supplies of the critical medical isotope molybdenum-99 (Mo-99) are secure and reliable ... and Molecular Imaging (SNMMI) 2017 annual meeting in Denver, Colorado in June. Mo-99 ... million nuclear medicine procedures worldwide every year. (1) , Sally Schwarz, President of ...
(Date:6/27/2017)... ... June 27, 2017 , ... Brain State Technologies, a ... campaign on June 15th to fund production of the new B2v2 wearable brainwave ... Kickstarter goal by more than 150% in a little over a week. , ...
(Date:6/27/2017)... ... June 27, 2017 , ... Indiana-based Xylogenics ... yeast production and fermentation process. The efficiencies created by the newest strain ... most notably the ethanol industry wherein individual production plants are planning to invest ...
(Date:6/26/2017)... ... 2017 , ... Third Wave Bioactives, LLC announces the addition of Brett Thompson. ... business development and ensuring quality customer experience. , Brett brings to Third ... technical, marketing and sales roles. “Brett’s background working with customers and eye for market ...
Breaking Biology Technology:
(Date:3/30/2017)... LOS ANGELES , March 30, 2017  On ... Hack the Genome hackathon at ... This exciting two-day competition will focus on developing health ... experience. Hack the Genome is ... has been tremendous. The world,s largest companies in the ...
(Date:3/28/2017)... 2017 The report "Video Surveillance ... Servers, Storage Devices), Software (Video Analytics, VMS), and Service ... Forecast to 2022", published by MarketsandMarkets, the market was ... projected to reach USD 75.64 Billion by 2022, at ... base year considered for the study is 2016 and ...
(Date:3/23/2017)... March 23, 2017 The report "Gesture Recognition and Touchless ... and Geography - Global Forecast to 2022", published by MarketsandMarkets, the market is ... of 29.63% between 2017 and 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):