Navigation Links
Researchers putting a freeze on oscillator vibrations
Date:6/17/2009

University of Oregon physicists have successfully landed a one-two punch on a tiny glass sphere, refrigerating it in liquid helium and then dosing its perimeter with a laser beam, to bring its naturally occurring mechanical vibrations to a near standstill.

The findings, published in Nature Physics, could boost advances in information processing that exploits special quantum properties and in precision-measurements for nanotechnology. The ability to freeze mechanical fluctuations, or vibrations, with a laser in so-called optomechanical oscillators, also opens a window on the little-explored transition between quantum and classical physics, said principal investigator Hailin Wang.

Wang, a member of the Oregon Center for Optics and a professor in the UO physics department, and his doctoral student Young-Shin Park performed the research under grants from the National Science Foundation and Army Research Laboratory through the Oregon Nanoscience and Microtechnologies Institute (ONAMI).

In nanotechnology, understanding phonons -- vibrations that carry energy -- is becoming increasingly important. For their project, Wang and Park purposely manufactured a deformed silica microsphere about 30 microns in diameter, about the size of a human hair.

A combination of cryogenic pre-cooling of the sphere to 1.4 Kelvin (minus 457.15 degrees Fahrenheit) and hitting the sphere's outer surface with a laser allowed researchers to extract energy from the mechanical oscillator and lower the level of phonon excitations to near 40 quanta. Ultimately, Wang said, the goal is to reduce that level, known as the average phonon occupation, to one quantum.

"Our goal is to get to and work with the quantum mechanical ground state in which there is very little excitation or displacement," Wang said. Reaching one quantum would require a temperature just a few thousandths of a degree from absolute zero (minus 459.67 degrees Fahrenheit).


'/>"/>

Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
Source:Eurekalert  

Page: 1

Related biology technology :

1. Researchers improve ability to write and store information on electronic devices
2. Long-awaited international ethical guidelines for biobank researchers
3. CU researchers shed light on light-emitting nanodevice
4. Stevens researchers provide new information about mass spectrometry
5. Researchers measure carbon nanotube interaction
6. Researchers underscore limitations of genetic ancestry tests
7. ASU researchers improve memory devices using nanotech
8. UD researchers race ahead with latest spintronics achievement
9. Researchers outline structure of largest nonvirus particle ever crystallized
10. Ames Laboratory researchers solve fuel-cell membrane structure conundrum
11. Researchers use magnetism to target cells to animal arteries
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers putting a freeze on oscillator vibrations
(Date:6/24/2016)... Epic Sciences unveiled a liquid biopsy ... PARP inhibitors by targeting homologous recombination deficiency (HRD) ... test has already been incorporated into numerous clinical ... Over 230 clinical trials are investigating ... PARP, ATM, ATR, DNA-PK and WEE-1. Drugs targeting ...
(Date:6/24/2016)... ... , ... Researchers at the Universita Politecnica delle Marche in Ancona combed medical ... mesothelioma. Their findings are the subject of a new article on the Surviving Mesothelioma ... in the blood, lung fluid or tissue of mesothelioma patients that can help point ...
(Date:6/23/2016)... ... June 23, 2016 , ... UAS LifeSciences, ... launch of their brand, UP4™ Probiotics, into Target stores nationwide. The company, which ... to add Target to its list of well-respected retailers. This list includes such ...
(Date:6/23/2016)... , June 23, 2016 /PRNewswire/ - FACIT ... Ontario biotechnology company, Propellon Therapeutics ... development and commercialization of a portfolio of first-in-class ... Epigenetic targets such as WDR5 represent an exciting ... significantly in precision medicine for cancer patients. Substantial ...
Breaking Biology Technology:
(Date:4/19/2016)... -- The new GEZE SecuLogic access control ... system solution for all door components. It can be ... interface with integration authorization management system, and thus fulfills ... dimensions of the access control and the optimum integration ... considerable freedom of design with regard to the doors. ...
(Date:4/13/2016)... , April 13, 2016  IMPOWER physicians supporting ... are setting a new clinical standard in telehealth thanks ... By leveraging the higi platform, IMPOWER patients can routinely ... pulse and body mass index, and, when they opt ... and convenient visit to a local retail location at ...
(Date:3/23/2016)... , March 23, 2016 ... Interesse erhöhter Sicherheit Gesichts- und Stimmerkennung mit ... Inc. (NASDAQ: MESG ), ein ... dass das Unternehmen mit SpeechPro zusammenarbeitet, um ... der Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, im ...
Breaking Biology News(10 mins):