A blueprint for building a quantum computer
... computers. We highlight the process of integrating the basic elements that have already been developed, and introduce the challenges that remain in delivering on the promise of quantum computing. The most famous development to date in quantum algorithms is Shor’s algorithm for factoring large number ...
... computers. We highlight the process of integrating the basic elements that have already been developed, and introduce the challenges that remain in delivering on the promise of quantum computing. The most famous development to date in quantum algorithms is Shor’s algorithm for factoring large number ...
Quantum Computing: The Risk to Existing Encryption Methods
... understand, and even harder to build; despite some companies claiming they have created quantum computers, there is still disagreement over whether quantum computing is even possible.12 The purpose of this paper is not to delve deeply into the physics of quantum computers as it is considerably compl ...
... understand, and even harder to build; despite some companies claiming they have created quantum computers, there is still disagreement over whether quantum computing is even possible.12 The purpose of this paper is not to delve deeply into the physics of quantum computers as it is considerably compl ...
![[2015 question paper]](http://s1.studyres.com/store/data/008881819_1-2322a19bdc6e8ffedff685bb2aff8c48-300x300.png)
[2015 question paper]
... where the integration is over all directions in which the unit vector n̂ can point. You may need the relation between Cartesian and spherical polar coordinates z = r cos θ, x = r sin θ cos ϕ and y = r sin θ sin ϕ. (a) A is a real symmetric matrix. What does this mean for its eigenvalues? [2 mks] (b) ...
... where the integration is over all directions in which the unit vector n̂ can point. You may need the relation between Cartesian and spherical polar coordinates z = r cos θ, x = r sin θ cos ϕ and y = r sin θ sin ϕ. (a) A is a real symmetric matrix. What does this mean for its eigenvalues? [2 mks] (b) ...
Basic elements of quantum information technology
... and q if you are given just N .) The hardness of factoring forms the basis for public key cryptosystems 4 such as RSA [6]; these are very widely used today so the cracking of the factoring problem would have major implications! I'll brie y use these two examples, cryptography and computation, to hig ...
... and q if you are given just N .) The hardness of factoring forms the basis for public key cryptosystems 4 such as RSA [6]; these are very widely used today so the cracking of the factoring problem would have major implications! I'll brie y use these two examples, cryptography and computation, to hig ...
Weak-Equivalence Principle Violation and Mass Change
... The universality of free-fall or the Weak Equivalence Principle (WEP) has been studied and verified since the time of Galileo Galilei. Almost all tests today have been carried out with neutral matter only due to the influence of the electromagnetic fields that can disturb the measurement. While such ...
... The universality of free-fall or the Weak Equivalence Principle (WEP) has been studied and verified since the time of Galileo Galilei. Almost all tests today have been carried out with neutral matter only due to the influence of the electromagnetic fields that can disturb the measurement. While such ...
THE BARE THEORY AND How TO FIX IT
... after the measurement. U one insists that exactly one of these two ordinary beliefs is what M would in fact believe based on M's experience, then the bare theory cannot account for M's experience. A proponent of the bare theory, however, would deny that M would end up with either of these two ordina ...
... after the measurement. U one insists that exactly one of these two ordinary beliefs is what M would in fact believe based on M's experience, then the bare theory cannot account for M's experience. A proponent of the bare theory, however, would deny that M would end up with either of these two ordina ...
Quantum Computing with Quantum Dots
... how a quantum computing (QC) system can be realized using localized excitons in QDs as the elementary quantum bit. According to DiVincenzo, the five requirements that must be satisfied in order to obtain a reliable QC system are: (1) a scalable system, (2) the ability to initialize qubits (3) relat ...
... how a quantum computing (QC) system can be realized using localized excitons in QDs as the elementary quantum bit. According to DiVincenzo, the five requirements that must be satisfied in order to obtain a reliable QC system are: (1) a scalable system, (2) the ability to initialize qubits (3) relat ...
Classical properties of quantum scattering
... of additional collimators the incident and the detected scattered beams can be separated, thus justifying the above treatment. However, not dismissing his expectation, we point out that those collimators would introduce other scattering elements. Their effect would be difficult to distinguish from t ...
... of additional collimators the incident and the detected scattered beams can be separated, thus justifying the above treatment. However, not dismissing his expectation, we point out that those collimators would introduce other scattering elements. Their effect would be difficult to distinguish from t ...
Probing charge fluctuator correlations using quantum dot pairs Purohit, er, tt
... exhibiting electronic confinement in all three spatial dimensions. As such, a QD is zero dimensional, and its eigenstates resemble those of a particle in a box [1,2]. They are “artificial atoms” and many properties typical of discrete energy level spectra have been observed, for example, Rabi oscill ...
... exhibiting electronic confinement in all three spatial dimensions. As such, a QD is zero dimensional, and its eigenstates resemble those of a particle in a box [1,2]. They are “artificial atoms” and many properties typical of discrete energy level spectra have been observed, for example, Rabi oscill ...
The capacity of the noisy quantum channel
... quantum information: examples of such completely decoherent channels will be discussed below. The difference between quantum and classical information does not arise from a fundamental physical distinction between the systems that register, process, and transmit that information. As just noted, quan ...
... quantum information: examples of such completely decoherent channels will be discussed below. The difference between quantum and classical information does not arise from a fundamental physical distinction between the systems that register, process, and transmit that information. As just noted, quan ...
the quantum vacuum
... On the jacket of SAUNDERS’ AND BROWN’s book „The Philosophy of the Vacuum“ we can read the statement that „the vacuum is fast emerging as the central structure of modern physics“ (Saunders and Brown, 1991). Still considered by many to be not much more than a mathematical convenience without physical ...
... On the jacket of SAUNDERS’ AND BROWN’s book „The Philosophy of the Vacuum“ we can read the statement that „the vacuum is fast emerging as the central structure of modern physics“ (Saunders and Brown, 1991). Still considered by many to be not much more than a mathematical convenience without physical ...
Fractionalization, Topological Order, and
... On the other hand, the situation is quite different in d 1, where the ‘‘polyacetylene’’-type fractionalization [20] is known to occur in a conventional ordered phase with a spontaneous breaking of the translation symmetry. Our argument applied to d 1 just requires the ground state on a ring to b ...
... On the other hand, the situation is quite different in d 1, where the ‘‘polyacetylene’’-type fractionalization [20] is known to occur in a conventional ordered phase with a spontaneous breaking of the translation symmetry. Our argument applied to d 1 just requires the ground state on a ring to b ...
Quantum digital spiral imaging
... the non-local decomposition of non-integer phase vortices. A collimated 355-nm beam pumps a 5-mm long b-barium borate (BBO) crystal, where a degenerate 710 nm signal and idler photons are produced in pairs via type-I collinear SPDC and are separated by a non-polarizing beam splitter. The crystal is ...
... the non-local decomposition of non-integer phase vortices. A collimated 355-nm beam pumps a 5-mm long b-barium borate (BBO) crystal, where a degenerate 710 nm signal and idler photons are produced in pairs via type-I collinear SPDC and are separated by a non-polarizing beam splitter. The crystal is ...
Bohr–Einstein debates
The Bohr–Einstein debates were a series of public disputes about quantum mechanics between Albert Einstein and Niels Bohr. Their debates are remembered because of their importance to the philosophy of science. An account of the debates was written by Bohr in an article titled ""Discussions with Einsteinon Epistemological Problems in Atomic Physics"". Despite their differences of opinion regarding quantum mechanics, Bohr and Einstein had a mutual admiration that was to last the rest of their lives.The debates represent one of the highest points of scientific research in the first half of the twentieth century because it called attention to an element of quantum theory, quantum non-locality, which is absolutely central to our modern understanding of the physical world. The consensus view of professional physicists has been that Bohr proved victorious, and definitively established the fundamental probabilistic character of quantum measurement.