depolarise

Definitions

  • WordNet 3.6
    • v depolarise eliminate the polarization of
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Chambers's Twentieth Century Dictionary
    • v.t Depolarise de-pō′lar-īz to deprive of polarity
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Usage

In literature:

It is the parents' duty to depolarise them.
"The Nervous Child" by Hector Charles Cameron
The blocks certainly polarise more quickly than the old form, and it does not appear that they depolarise any more rapidly.
"Electric Bells and All About Them" by S. R. Bottone
For George Keene was becoming accustomed to being, as it were, depolarised.
"The Potter's Thumb" by Flora Annie Steel
For the time he was absolutely at fault, utterly depolarised.
"Voices in the Night" by Flora Annie Steel
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In science:

The channel-state isomorphism is used to study and contrast amplitude damping channels and generalised depolarising channels geometrically.
Dissipative and Non-dissipative Single-Qubit Channels: Dynamics and Geometry
More generally, phase flip channels are a subset of Pauli or generalized depolarising channels, which are unital, i.e, they map the identity matrix to itself.
Dissipative and Non-dissipative Single-Qubit Channels: Dynamics and Geometry
In fiber based QC, the problem is to maintain this value in spite of polarisation fluctuations and depolarisation in the fiber link.
Quantum Cryptography
An additional hardware requirement is a polarisation preserving screen, as a normal screen such as a painted wall9 will depolarise the incident light.
Future Directions in Astronomy Visualisation
For HERMES, depolarising effects from the coils of H1 and ZEUS were compensated during HERA I with special magnets near the beam axis.
Collider Physics at HERA
The downstream polarimeter has access to the depolarisation in the interaction while the upstream polarimeter has a much higher counting rate and time granularity which is important for correlation measurements.
Executive Summary of the Workshop on Polarisation and Beam Energy Measurements at the ILC
It can measure the beam polarisation both with and without collisions, thereby testing the calculated depolarisation correction which is expected to be at the 0.1-0.2% level. A complete conceptual layout for the downstream polarimeter exists, including magnets, laser system and detector configuration.
Executive Summary of the Workshop on Polarisation and Beam Energy Measurements at the ILC
As expected, there was no discernable depolarisation.
Review of quasi-elastic charge-exchange data in the nucleon-deuteron breakup reaction
We effectively choose S by flipping a fair coin, but if we use a biased coin then this has an interesting alternate interpretation in terms of the output purity of the depolarising channel.
Testing product states, quantum Merlin-Arthur games and tensor optimisation
Since the correctness of the product test is a special case of this more general theorem, we first prove the result about depolarising channels in Appendix A and then complete the details necessary for the product test in Appendix B.
Testing product states, quantum Merlin-Arthur games and tensor optimisation
In general, choosing S according to a binomial distribution on [n] and taking the expectation of tr ρ2 S is equivalent to evaluating the output purity of n uses of the depolarising channel Dδ (as defined in (2)). A special case of this corresponds to the probability of the product test passing.
Testing product states, quantum Merlin-Arthur games and tensor optimisation
Our main result can be seen as a “stability” theorem for the output purity of the depolarising channel (cf.
Testing product states, quantum Merlin-Arthur games and tensor optimisation
R´enyi entropies for the depolarising channel, or even for all channels where additivity holds.
Testing product states, quantum Merlin-Arthur games and tensor optimisation
A The depolarising channel Let Dδ be the qudit depolarising channel as defined in equation (2).
Testing product states, quantum Merlin-Arthur games and tensor optimisation
We will now prove states, since only product states saturate the inequality tr ρ2 our main result, which is a “stability” theorem for the depolarising channel: if a state achieves close to maximal output purity, it must be close to a product state.
Testing product states, quantum Merlin-Arthur games and tensor optimisation
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