A colleague just emailed @condensed_the mentioning that some have apparently been offended by the 2LS high-school allusion, no disrespect was meant, it is just that there are high schoolers (I know two extremely well) who master(ed) Nielsen-Chuang completely as 10th graders
To make up for this slip, it may be useful to emphasize that CMTC has produced more than 100 quantum computing theory papers on 2-level dynamics over the last 20 years since spin qubits are a main research thrust of CMTC See the newest and the oldest:
arxiv.org/abs/2008.01168
Geometrical Formalism for Dynamically Corrected Gates in Multiqubit Systems (to appear in PRX Quantum) arxiv.org/abs/quant-ph/9… PRA 61,062301
Hilbert space structure of a solid state quantum computer
And the first author in the 2LS CMTC theory paper below was a high-school 12th grader!
arxiv.org/abs/0710.1416 PRL 100, 160505 (2008)
Universal pulse sequence to minimize spin dephasing in the central spin decoherence problem
There is a huge misconception, not just in popular press but even promulgated by scientists who should know better, that the recent retraction-related development in Majorana physics dooms topological #QuantumComputing This is false. The recent development is in fact an advance
arxiv.org/abs/2101.11456, arxiv.org/abs/2102.02218
together show that sample disorder must be reduced to create the topological qubit exactly as reducing disorder in silicon during 1930-60 led to modern electronics. We now know what needs to be done. This is progress.
The whole dichotomy perpetuated in the popular press that somehow there is no topological qubit and there are 53 superconducting qubits shows a total ignorance of how a quantum computer works-- you must have LOGICAL qubits which NOBODY is even close to having.
was on the top-20 theoretical breakthroughs in physics since 1900. Physics, being the interpretation of the natural universe, is an experimental science by definition #quantum#QuantumComputing#physics
1.1 Here we are providing a list of the top-25 experimental physics discoveries since 1900. To atone for our producing the theory list first, this thread contains 25 experimental discoveries between 1900-2020. Let us know if we missed your favorites.
2. Photoelectric effect (1900, 1902, 1914): Established the quantum nature of light
1. Thread on topological quantum computing (TQC). TQC is a radical approach to quantum computing where the individual topological qubits (Tqb) are intrinsically protected against decoherence by physics, making quantum error correction unnecessary. #quantum#QuantumComputing
1.1 TQC involves highly sophisticated mathematics and physics that is of intrinsic intellectual interest on its own quite distinct from its potential as a prospective QC platform. This thread highlights TQC, a central research topic in our center
2. Topological immunity in TQC arises from an intrinsic quantum ground state degeneracy in Tqb, protected by an energy gap, which is not connected to any symmetry, and hence cannot be destroyed by noise or decoherence as long as the gap does not close
1. A list of Condensed Matter Models. Theoretical physics works with models since the physical world is far too complex with far too much going on. Models enable focusing on specific aspects, allowing progress and understanding. There are many famous models. #physics#quantum
1.1 Newtonian model of classical mechanics with its inertial frames and action at a distance and the Standard Model of particle physics with its hierarchy and unnaturalness. We discuss famous models of condensed matter physics, an obvious subject for our center.
1.2 Condensed matter theory is filled with many hundreds of models because of the vast scope of the subject.
1/ A list of the 20 most consequential theoretical breakthroughs in physics over the last 100 years. What did we miss out on? Of course, we had to leave out many important theories because of the arbitrary nature of any top-20 list! #physics#quantum#theoreticalphysics
2/ De Broglie wave-particle duality (1924) conjectures that all particles, e.g. electrons, are also waves with wavelength proportional to the inverse momentum—particles and waves are simultaneous dual properties of matter.
3/ Schrodinger equation (1925) demonstrates the fundamental dynamical equation controlling the microscopic physical world and starts the quantum revolution.