Search for Signatures of New Heavy Top Quark of the Fourth
... heavy quark searches. In particular, the observation of a new boson by the ATLAS [1] and CMS [2] Collaborations with a mass of ~126 GeV and couplings close to those expected for the SM Higgs boson disfavors [3] fourth-generation models. These models predict a large increase in the production rate fo ...
... heavy quark searches. In particular, the observation of a new boson by the ATLAS [1] and CMS [2] Collaborations with a mass of ~126 GeV and couplings close to those expected for the SM Higgs boson disfavors [3] fourth-generation models. These models predict a large increase in the production rate fo ...
Quantum networking with single ions J¨ urgen Eschner
... side, any jitter in the emission time or frequency, resulting for example from fluctuations in the laser frequency or intensity or from magnetic field noise, will lead to non-maximal coherence. Even without these, however, an important fundamental limitation is set by the branching ratio of the uppe ...
... side, any jitter in the emission time or frequency, resulting for example from fluctuations in the laser frequency or intensity or from magnetic field noise, will lead to non-maximal coherence. Even without these, however, an important fundamental limitation is set by the branching ratio of the uppe ...
1. Introduction
... photons have the same wavelength, polarization and spatio-temporal mode. In such a case the first two possibilities - when both photons are transmitted (Fig.1a) or reflected (Fig.1b) - cannot be distinguished from one another because there is always one photon in either output mode. As a result, the ...
... photons have the same wavelength, polarization and spatio-temporal mode. In such a case the first two possibilities - when both photons are transmitted (Fig.1a) or reflected (Fig.1b) - cannot be distinguished from one another because there is always one photon in either output mode. As a result, the ...
QUANTUM AND CLASSICAL STRONG DIRECT
... If T ≈ kt, then σ = 2−Ω(k) . Strong direct product theorems (SDPTs), though intuitively very plausible, are generally hard to prove and sometimes not even true. Shaltiel [Sha01] exhibits a general class of examples where SDPTs fail. This applies, for instance, to query complexity, communication comp ...
... If T ≈ kt, then σ = 2−Ω(k) . Strong direct product theorems (SDPTs), though intuitively very plausible, are generally hard to prove and sometimes not even true. Shaltiel [Sha01] exhibits a general class of examples where SDPTs fail. This applies, for instance, to query complexity, communication comp ...
The concept of modes in optics and photonics
... for the basic definition of a temporal mode. This property means that photons within one temporal mode cannot by distinguished by their energy hv. For the interested reader and for completeness only, it shown in the following how for more general power spectral density functions S(v) the values of L ...
... for the basic definition of a temporal mode. This property means that photons within one temporal mode cannot by distinguished by their energy hv. For the interested reader and for completeness only, it shown in the following how for more general power spectral density functions S(v) the values of L ...
quantum algorithms - Computer Engineering
... on an exact value of 0 or 1, and that is what we see, not a combination of the two values. But which value do we see, 0 or 1? In general, this is a probabilistic event, and the probabilities are determined by the state of the quantum bit before the measurement. To represent the exact state of a qubi ...
... on an exact value of 0 or 1, and that is what we see, not a combination of the two values. But which value do we see, 0 or 1? In general, this is a probabilistic event, and the probabilities are determined by the state of the quantum bit before the measurement. To represent the exact state of a qubi ...
Experimental generation of single photons via active multiplexing
... for each SPDC source by a series of beam splitters (BSs). These SPDC sources are then coupled by fast photon routers and directed to a single output. Each individual SPDC source has the probability to generate one pair, P1 . The pump power input is chosen to be low enough that the generation of more ...
... for each SPDC source by a series of beam splitters (BSs). These SPDC sources are then coupled by fast photon routers and directed to a single output. Each individual SPDC source has the probability to generate one pair, P1 . The pump power input is chosen to be low enough that the generation of more ...
Heralded Single-Magnon Quantum Memory for Photon Polarization States
... At a later time, the stored state can be retrieved on demand as a single photon by utilizing the strong coupling of the magnon to the resonator [8,21] (‘‘read’’ process). The heralding serves to enhance the fidelity of the write process by announcing successful events. In our present nonoptimized se ...
... At a later time, the stored state can be retrieved on demand as a single photon by utilizing the strong coupling of the magnon to the resonator [8,21] (‘‘read’’ process). The heralding serves to enhance the fidelity of the write process by announcing successful events. In our present nonoptimized se ...
PDF: Aspden et al 2016 b
... several constraints placed upon the down-conversion process. First, down-conversion replaces one photon with two new photons. The energies of the emitted pair of photons must, according conservation of energy, add up to the energy of the incident pump photon: !hxpump ¼ !hx1 þ !hx2 . This implies tha ...
... several constraints placed upon the down-conversion process. First, down-conversion replaces one photon with two new photons. The energies of the emitted pair of photons must, according conservation of energy, add up to the energy of the incident pump photon: !hxpump ¼ !hx1 þ !hx2 . This implies tha ...
www2
... several seconds). If the OEC is driven by a pseudo-thermal light source of these characteristics, differences in the evolved oxygen should be observed. The possible magnitude of the effect due to different photon statistics at the same mean photon numbers is well demonstrated in Fig. 2.6 where the t ...
... several seconds). If the OEC is driven by a pseudo-thermal light source of these characteristics, differences in the evolved oxygen should be observed. The possible magnitude of the effect due to different photon statistics at the same mean photon numbers is well demonstrated in Fig. 2.6 where the t ...
Ellis-part1
... July 31st 1964 to Physics Letters, rejected! • Revised version (Aug. 31st 1964) accepted by PRL ...
... July 31st 1964 to Physics Letters, rejected! • Revised version (Aug. 31st 1964) accepted by PRL ...
This article was downloaded by:[Michigan State University Libraries]
... phenomena highlight either the coherence of the fields or the graining of the energy. Research in quantum optics in the last century has been extremely successful and has given rise to the development of novel technologies, most prominently the invention of the laser. In addition, it also stimulated ...
... phenomena highlight either the coherence of the fields or the graining of the energy. Research in quantum optics in the last century has been extremely successful and has given rise to the development of novel technologies, most prominently the invention of the laser. In addition, it also stimulated ...
Non-contextual inequalities and dimensionality Johan Ahrens
... something like: “if a spin-half particle in the state |ψi = √12 (|↑iz + eiϕ |↓iz ) pass through a Stern-Gerlach apparatus aligned in the z-direction, what are the possible measurement outcomes and their corresponding probabilities?”. This is quite straight forward and it only takes a line or two to ...
... something like: “if a spin-half particle in the state |ψi = √12 (|↑iz + eiϕ |↓iz ) pass through a Stern-Gerlach apparatus aligned in the z-direction, what are the possible measurement outcomes and their corresponding probabilities?”. This is quite straight forward and it only takes a line or two to ...
PPLN waveguide for quantum communication | SpringerLink
... for energy-time entangled photon pairs was proposed by Franson in 1989 [26] and first experiments were reported in 1992 [5,6]. A schematic is shown in Figure 5. The source S is composed of a CW laser diode with large coherence length (λP = 657 nm), the PPLN waveguide to create photon-pairs and a fib ...
... for energy-time entangled photon pairs was proposed by Franson in 1989 [26] and first experiments were reported in 1992 [5,6]. A schematic is shown in Figure 5. The source S is composed of a CW laser diode with large coherence length (λP = 657 nm), the PPLN waveguide to create photon-pairs and a fib ...
Quantum Turing Test
... work state, giving an upper bound on the size of Alice’s computation. This is unavoidable: ple adaptation of the proof of Theorem|±2 +⇥+r⇤ from ⇧[AFK89], confirms this. We incorporate otion of leakage in our definition of blindness. A quantum delegated computation protocol protocol by which Alice in ...
... work state, giving an upper bound on the size of Alice’s computation. This is unavoidable: ple adaptation of the proof of Theorem|±2 +⇥+r⇤ from ⇧[AFK89], confirms this. We incorporate otion of leakage in our definition of blindness. A quantum delegated computation protocol protocol by which Alice in ...
Quantum NP - A Survey Dorit Aharonov and Tomer Naveh
... the quantum analog, we immediately encounter an obstacle. We cannot require the verifier to answer 0 or 1 deterministically, because we will not be able to distinguish between this case and the case in which the verifier outputs these values with extremely high probability. Since the fact that state ...
... the quantum analog, we immediately encounter an obstacle. We cannot require the verifier to answer 0 or 1 deterministically, because we will not be able to distinguish between this case and the case in which the verifier outputs these values with extremely high probability. Since the fact that state ...
Phys. Rev. Lett
... photon-photon correlations too. This would also be a crucial test of the QP potential in the quantum optics field, as multiphoton correlations are extremely sensitive to optical quality issues. Consider first the case of two independent linearly polarized photons, one horizontal and the other vertic ...
... photon-photon correlations too. This would also be a crucial test of the QP potential in the quantum optics field, as multiphoton correlations are extremely sensitive to optical quality issues. Consider first the case of two independent linearly polarized photons, one horizontal and the other vertic ...
IOSR Journal of Applied Physics (IOSR-JAP) e-ISSN: 2278-4861.
... Systems which are composed of particles that do not interact with each other, therefore uncorrelated. These model are called Ideal gases Systems which consist of particles which interact with each other such that interparticle interactions cause correlation between the many particles. Such syste ...
... Systems which are composed of particles that do not interact with each other, therefore uncorrelated. These model are called Ideal gases Systems which consist of particles which interact with each other such that interparticle interactions cause correlation between the many particles. Such syste ...
From optimal state estimation to efficient quantum algorithms
... Problem: Given k integers x1,...,xk from ZN and a target w from ZN, find a subset of the k integers that sum to the target (i.e., find b1,...,bk from Z2 so that b·x=w). In general, this problem is NP-hard. But the average-case problem at a fixed density ∫ := k/log2 N may be much easier. low density ...
... Problem: Given k integers x1,...,xk from ZN and a target w from ZN, find a subset of the k integers that sum to the target (i.e., find b1,...,bk from Z2 so that b·x=w). In general, this problem is NP-hard. But the average-case problem at a fixed density ∫ := k/log2 N may be much easier. low density ...
density matrices
... •The probability that state k results in “outcome” state Ak is 2/3. •This can be adapted to actually yield the value of k with this success probability ...
... •The probability that state k results in “outcome” state Ak is 2/3. •This can be adapted to actually yield the value of k with this success probability ...
PDF
... Keeping in mind the ubiquitous standard optical fiber for long-distance transmission and the widespread availability of efficient active and passive fiber devices, we have been developing telecom-band resources for practical quantum communication and cryptography in wave-division-multiplexed (WDM) o ...
... Keeping in mind the ubiquitous standard optical fiber for long-distance transmission and the widespread availability of efficient active and passive fiber devices, we have been developing telecom-band resources for practical quantum communication and cryptography in wave-division-multiplexed (WDM) o ...