Searched for: subject%3A%22Quantum%255C%2Boptics%22
(1 - 20 of 20)
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Neves Almeida Lopes, Tamira (author)
When looking up to the sky and trying to detect the photons of far away stars that are still in formation, we can get access to knowledge we never had before. In order to do this, we must make sure we truly understand the nature of how photons behave in accordance to each other and to our detectors.In quantum optics we can see that these photons...
bachelor thesis 2022
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SOTIROPOULOS, YORGOS (author)
High fidelity GHZ states among remote nodes is a precious commodity which can allow for non-local stabilizer measurements and thus pave the way for a modular fault-tolerant quantum computer. To this end, we extend the high fidelity intracavity gate introduced by Borregaard et al. (2015) to distributed paradigm, consisting of SnV-inspired atomic...
master thesis 2022
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Tiebosch, Joris (author)
DESHIMA (the Deep Spectroscopic High-Redshift Mapper) is a 347 channel superconducting spectrometer with spectral resolution R =500 that operates in the range of 220GHz to 440GHz and can therefore accurately measure the frequency of spectral lines in order to calculate redshift z.<br/>This report investigates the sensitivity of DESHIMA-like...
bachelor thesis 2022
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Maradiaga Rosales, Ian (author)
Superconducting nanowire single-photon detectors (SNSPDs) are characterized by their quantum limited ability to accurately detect single photons, with low jitter, high detection efficiency and low dark count rate. To achieve this, the detector is cooled to 2-3K, bringing the device in a superconductive state, and is then biased with a direct...
bachelor thesis 2021
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Esmaeil Zadeh, I.Z. (author), Chang, J. (author), Van Staaden, Yuri J. (author), Swens, Jeroen P.E. (author), Dobrovolskiy, S.M. (author), Schaart, D.R. (author), Pereira, S.F. (author), Zwiller, Val (author), Dorenbos, S.N. (author)
A broad range of scientific and industrial disciplines require precise optical measurements at very low light levels. Single-photon detectors combining high efficiency and high time resolution are pivotal in such experiments. By using relatively thick films of NbTiN (8-11 nm) and improving the pattern fidelity of the nanostructure of the...
journal article 2020
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Kalb, N. (author)
Quantum networks promise to be the future architecture for secure communication and distributed quantum computation. This thesis describes experiments on nitrogenvacancy (NV) centres that lead towards a versatile multi-node quantum network consisting ofmulti-qubit nodes.<br/>The NV centre in diamond is a spinful optically-active crystal defect....
doctoral thesis 2018
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Forn Diaz, P. (author), Romero, G. (author), Harmans, C.J.P.M. (author), Solano, E. (author), Mooij, J.E. (author)
Understanding the interaction between light and matter is very relevant for fundamental studies of quantum electrodynamics and for the development of quantum technologies. The quantum Rabi model captures the physics of a single atom interacting with a single photon at all regimes of coupling strength. We report the spectroscopic observation...
journal article 2016
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Sala, Arnau (author), Blaauboer, M. (author)
We propose an implementation of a quantum router for microwave photons in a superconducting qubit architecture consisting of a transmon qubit, SQUIDs and a nonlinear capacitor. We model and analyze the dynamics of operation of the quantum switch using quantum Langevin equations in a scattering approach and compute the photon reflection and...
journal article 2016
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Esmaeil Zadeh, I.Z. (author), Elshaari, A.W.A. (author), Jöns, K.D. (author), Fognini, A.W. (author), Dalacu, Dan (author), Poole, Philip J. (author), Reimer, Michael E. (author), Zwiller, V.G. (author)
A major step toward fully integrated quantum optics is the deterministic incorporation of high quality single photon sources in on-chip optical circuits. We show a novel hybrid approach in which preselected III-V single quantum dots in nanowires are transferred and integrated in silicon based photonic circuits. The quantum emitters maintain...
journal article 2016
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Hosseini Aria, S.E. (author), Menenti, M. (author), Gorte, B.G.H. (author)
Reliability analysis is usually applied to evaluate classification procedures with different classes. In this research, we have applied the analysis to two different band sets to find out which one is more reliable. These band sets provide the most informative spectral regions covered by hyperspectral images. The informative regions are...
journal article 2014
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Pfaff, W. (author), Vos, A. (author), Hanson, R. (author)
Metal nanostructures can be used to harvest and guide the emission of single photon emitters on-chip via surface plasmon polaritons. In order to develop and characterize photonic devices based on emitter-plasmon hybrid structures, a deterministic and scalable fabrication method for such structures is desirable. Here, we demonstrate deterministic...
journal article 2013
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Heeres, R.W. (author)
This thesis describes experiments with surface plasmons: light confined to metal-dielectric interfaces. By using metals it is possible to make extremely small waveguides for light, even below the diffraction limit of dielectric structures. We study the quantum aspects of single plasmons in particular. To this end we create small circuits of gold...
doctoral thesis 2012
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Alstein, P. (author)
master thesis 2012
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Van der Sar, T. (author), Hagemeier, J. (author), Pfaff, W. (author), Heeres, E. (author), Thon, S. (author), Kim, H. (author), Petroff, P. (author), Oosterkamp, T. (author), Bouwmeester, D. (author), Hanson, R. (author)
Single quantum emitters can be coupled to photonic crystal (PC) cavities by placing their host nanoparticles into the cavity field. We describe fabrication, characterization, and tuning of gallium-phosphide PC cavities that resonate in the visible, and simulations and measurements of the effect of a nanoparticle on the optical properties of...
journal article 2012
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Gerrits, T. (author), Stevens, M.J. (author), Baek, B. (author), Calkins, B. (author), Lita, A. (author), Glancy, S. (author), Knill, E. (author), Nam, S.W. (author), Mirin, R.P. (author), Hadfield, R.H. (author), Bennink, R.S. (author), Grice, W.P. (author), Dorenbos, S.N. (author), Zijlstra, T. (author), Klapwijk, T.M. (author), Zwiller, V. (author)
We characterize a periodically poled KTP crystal that produces an entangled, two-mode, squeezed state with orthogonal polarizations, nearly identical, factorizable frequency modes, and few photons in unwanted frequency modes. We focus the pump beam to create a nearly circular joint spectral probability distribution between the two modes. After...
journal article 2011
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Van der Sar, T. (author), Hagemeier, J. (author), Pfaff, W. (author), Heeres, E.C. (author), Thon, S.M. (author), Kim, H. (author), Petroff, P.M. (author), Oosterkamp, T.H. (author), Bouwmeester, D. (author), Hanson, R. (author)
Controlling the interaction of a single quantum emitter with its environment is a key challenge in quantum optics. Here, we demonstrate deterministic coupling of single nitrogen-vacancy (NV) centers to high-quality photonic crystal cavities. We preselect single NV centers and position their 50-nm-sized host nanocrystals into the mode maximum of...
journal article 2011
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Xiong, C. (author), Marshall, G.D. (author), Peruzzo, A. (author), Lobino, M. (author), Clark, A.S. (author), Choi, D.Y. (author), Madden, S.J. (author), Natarajan, C.M. (author), Tanner, M.G. (author), Hadfield, R.H. (author), Dorenbos, S.N. (author), Zijlstra, T. (author), Zwiller, V. (author), Thompson, M.G. (author), Rarity, J.G. (author), Steel, M.J. (author), Luther-Davies, B. (author), Eggleton, B.J. (author), O'Brien, J.L. (author)
We demonstrate a 1550 nm correlated photon-pair source in an integrated glass platform—a chalcogenide As2S3 waveguide. A measured pair coincidence rate of 80?s?1 was achieved using 57 mW of continuous-wave pump. The coincidence to accidental ratio was shown to be limited by spontaneous Raman scattering effects that are expected to be mitigated...
journal article 2011
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Van Kouwen, M.P. (author)
An important goal for nanoscale opto-electronics is the transfer of single electron spin states into single photon polarization states (and vice versa), thereby interfacing quantum transport and quantum optics. Such an interface enables new experiments in the field of quantum information processing. Single and entangled photon-pair generation...
doctoral thesis 2010
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Schaart, D.R. (author), Seifert, S. (author), Vinke, R. (author), Van Dam, H.T. (author), Dendooven, P. (author), Löhner, H. (author), Beekman, F.J. (author)
The use of time-of-flight (TOF) information in positron emission tomography (PET) enables significant improvement in image noise properties and, therefore, lesion detection. Silicon photomultipliers (SiPMs) are solid-state photosensors that have several advantages over photomultiplier tubes (PMTs). SiPMs are small, essentially transparent to 511...
journal article 2010
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Maas, M.C. (author), Schaart, D.C. (author), Van der Laan, D.J. (author), Bruyndonckx, P. (author), Lemaître, C. (author), Beekman, F.J. (author), Van Eijk, C.W.E. (author)
We developed positron emission tomography (PET) detectors based on monolithic scintillation crystals and position-sensitive light sensors. Intrinsic depth-of-interaction (DOI) correction is achieved by deriving the entry points of annihilation photons on the front surface of the crystal from the light sensor signals. Here we characterize the...
journal article 2009
Searched for: subject%3A%22Quantum%255C%2Boptics%22
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