HOT NEWS: 7 February 2008

Quantum Phase via Geometry


PRESS RELEASE: Stanford Researchers Hear the Sound of Quantum Drums



Links to Summary and Paper at Science magazine.



Images of quantum drums:
(Click image for full TIFF version)

Quantum Shape Shifting

Quantum shape shifting. Molecular nanostructures of different shape (top and bottom surfaces), linked topologically (beam) to share the same spectrum, enable the measurement of quantum mechanical phase. Background: color-encoded quantum state transplantation matrix.

Topographical Structure Topographical Structure

A wrinkle in space. Two quantum nanostructures of different shape (top and bottom surfaces) can be linked topologically to “sound the same,” enabling the measurement of quantum mechanical phase (background).

Assembly of isospectral structure Assembly of isospectral structure

Nanoassembly of “quantum drums” enables measurement of quantum mechanical phase. Background: color-encoded quantum state transplantation matrix.

Two isospectral structures and one nonisospectral structure

Geometry over interferometry. Geometric tuning of quantum materials enables the measurement of normally forbidden quantum mechanical phase information.


Movies and sounds of quantum drums:

Quantum Isospectrality

Quantum isospectrality. Sounds generated from the average spectra acquired inside the Bilby, Hawk, and Broken Hawk shapes. Each sound is repeated 8 times as the topograph of the corresponding quantum drum is highlighted. Bilby and Hawk—which are isospectral—“sound the same,” while Broken Hawk can be audibly distinguished.

Movie S1 - Isospectrality.mov [QuickTime, 1.8 MB]


Quantum homophonicity

Quantum homophonicity. Audio conversion of 3 pairs of point spectra acquired within the isospectral Aye-aye and Beluga shapes. The similarity between the homophonic points is audibly contrasted with the easily discernable differences between other points. Each sound is repeated 4 times as the topograph of the corresponding nanostructure is highlighted and the position of the acquired spectrum is identified with a red cross.

Movie S2 - Homophonicity.mov [QuickTime, 3.8 MB]


Quantum transplantation

Quantum transplantation. Full phase extraction process for modes 1 to 3 of the Aye-aye (A) and Beluga (B) quantum resonators. The algorithm is represented by a black box, the quantum transplantation machine (QTM), which has the goal of obtaining the full wave functions including all amplitude and phase information. Chapter headings, matching audio narration, can be selected to jump to specific QTM states.

Movie S3 - Transplantation.mov [QuickTime, 16.1 MB]






Press

January 2006: The 7:30 Report (Australian Broadcasting Corporation)


Scientists Don't Doubt Nano Future

June 2005: Stanford Magazine


Smallville

May 2004: IndoLink


Hari Manoharan's Nanotechnology Breakthrough

November 2002: Physics World


Iconic Images: Quantum Mirage

September 2002: The Osgood File (CBS Radio Network)


Atom Sounds

Media Images


New York Times composite New Scientist cu Halliday and Resnick cover US News Nanotechnology Law cover
Nature Nanotech June 15 2001 Korean Dail IBM Journal of Research and Development Cu Physics News 1999 Cu Physics Web Quantum Mirage