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Jack Woehr

Dr. Dobb's Bloggers

Two interesting items [updated] related to QM/QC

August 24, 2009

Two interesting items related to QM/QC which we pass along hastily while pre-occupied with other matters ...

1. Clara Moskowitz reports on ECNMag.com that the Laser Interferometer Gravitational-Wave Observatory Scientific Collaboration (LIGO) has failed to detect the existence of gravity waves . The instrument isn't up to its maximum sensitivity but it is asserted that early runs have ruled out conclusively waves over a certain strength.

. Should it fail to detect any gravity waves, General Relativity is up for revision.

If gravity waves go the way of phlogiston and the aether, which seems likely at this point, the realization will impact quantum theory right in the kishkes.

[UPDATE] A relevant paper is Analysis of LIGO data for gravitational waves from binary neutron stars. The methodology for qualifying candidate events passing the gantlet of error-correction algorithms is extensively presented, along with the heuristics for bootstrapping the system to its maximum sensitivity.

The first search for gravitational-wave signals from coalescing neutron stars in LIGO science data yielded no coincident [qualifying at both of two detector sites at an interval shorter than the light speed travel time between the two sites] event candidates. An observational upper limit 1.7 × 102 y−1 MWEG−1 on the rate of neutron star inspirals was derived. This limit is better than previousdirect limits by a factor of 26. - arXiv:gr-qc/0308069v1 (IX)

2. EDN Executive Editor Ron Wilson ponders a possible inflection point in silicon scaling.

My question is, Is it time to create an industry-wide pool and chase Quantum Computing as a private industry venture?



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