'Universal' matter-wave interferometer relies on laser-produced ionization gratings

matter_wave
Three pulsed laser gratings in a matter-wave interferometer flash for only a few nanoseconds each. (Copyright: J. Rodewald/QNP/University of Vienna)


Vienna, Austria--Researchers at the University of Vienna have created what they call a universal matter-wave closed-path interferometer; the gratings that steer the beams of matter and cause them to interfere are formed by three pulses of a standing ultraviolet (UV) laser beam that create periodic arrays of ions.1 The researchers say that their interferometer is potentially capable of working with forms of matter ranging from atoms to atom clusters, molecules, and even nanospheres; so far, the researchers have observed the interference of fast molecular clusters with a composite de Broglie wavelength as small as 275 fm.

The three gratings, which have periods down to 80 nm, are created by nanosecond laser pulses, and therefore exist themselves for only about a nanosecond (and never simultaneously). "Interferometry in the time-domain with pulsed light gratings will become a central element of quantum experiments with nanoparticles," says Philipp Haslinger of the University of Vienna, who is the lead author of the paper.

Matter-wave interferometry has a longstanding tradition at the University of Vienna, where the first quantum interference of large molecules was observed in 1999.

The project is supported within the Austrian Science Fund (FWF) and the Austrian Ministry of Science (BMWF). The experiments were performed within the Vienna Center for Quantum Science and Technology, VCQ, at the Faculty of Physics, University of Vienna.

REFERENCE:

1. Philipp Haslinger et al., Nature Physics (2013), doi:10.1038/nphys2542




Get All the Laser Focus World News Delivered to Your Inbox

Subscribe to Laser Focus World Magazine or email newsletter today at no cost and receive the latest news and information.

 Subscribe Now

Most Popular Articles

Webcasts

Lens Design – Tools for designing manufacturable aspheres for complex optical assemblies

Designing aspheres that may be successfully fabricated and tested can be a frustrating experience. The range of possible aspheres is much larger than the ran...

Laser Measurements Critical to Successful Additive Manufacturing Processes

Maximizing the stability of the variables going into any manufacturing process is what ensures ts consistency and high quality. Specifically, when a laser is...

Handheld Spectrometers

Spectroscopy is a powerful and versatile tool that traditionally often required a large and bulky instrument. The combination of compact optics and modern pa...
White Papers

Running with Sharp Edges

A pulsed-current laser diode driver generates constant-current pulses for driving, testing, and c...

High-Power Diode Lasers under External Optical Feedback

We carried out a comprehensive study on single emitters with different antireflection (AR) coatin...

DRS Technologies’ Patented Sensor Technology Revealed

Learn the truth about what’s behind DRS Technologies’ competitive advantage over thermal sensor m...
Technical Digests

Fiber for Fiber Lasers

The development of higher-power and higher-energy fiber lasers has benefited from many advances i...

Click here to have your products listed in the Laser Focus World Buyers Guide.

PRESS RELEASES

AFL Releases FlexTester OTDR and Loss Test Set with Link Map

12/19/2014 AFL released LinkMap™ with Pass/Fail option for its OFL280 and FLX380 FlexTester family of all-in...

New Optical Wavelength Meters

09/07/2011 –Bristol Instruments, Inc., founded by three former employees of Burleigh, has announced the intr...

Bristol Instruments Introduces Laser Spectrum Analyzer

09/07/2011 Bristol Instruments Introduces Laser Spectrum Analyzer for Infrared Lasers Complete wavelength an...
Social Activity
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved. PRIVACY POLICY | TERMS AND CONDITIONS