scholarly journals Universal MBQC with generalised parity-phase interactions and Pauli measurements

Quantum ◽  
2019 ◽  
Vol 3 ◽  
pp. 134 ◽  
Author(s):  
Aleks Kissinger ◽  
John van de Wetering
Keyword(s):  
Quantum Computation ◽  
Graphical Representation ◽  
Single Pair ◽  
Feed Forward ◽  
Graph States ◽  
New Family ◽  
Universal Computation

We introduce a new family of models for measurement-based quantum computation which are deterministic and approximately universal. The resource states which play the role of graph states are prepared via 2-qubit gates of the form exp⁡(−iπ2nZ⊗Z). When n=2, these are equivalent, up to local Clifford unitaries, to graph states. However, when n>2, their behaviour diverges in two important ways. First, multiple applications of the entangling gate to a single pair of qubits produces non-trivial entanglement, and hence multiple parallel edges between nodes play an important role in these generalised graph states. Second, such a state can be used to realise deterministic, approximately universal computation using only Pauli Z and X measurements and feed-forward. Even though, for n>2, the relevant resource states are no longer stabiliser states, they admit a straightforward, graphical representation using the ZX-calculus. Using this representation, we are able to provide a simple, graphical proof of universality. We furthermore show that for every n>2 this family is capable of producing all Clifford gates and all diagonal gates in the n-th level of the Clifford hierarchy.

scholarly journals The Role of Global Appearance of Omnidirectional Images in Relative Distance and Orientation Retrieval

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3327
Author(s):  
Vicente Román ◽  
Luis Payá ◽  
Adrián Peidró ◽  
Mónica Ballesta ◽  
Oscar Reinoso
Keyword(s):  
Mobile Robotics ◽  
A Priori ◽  
Computational Cost ◽  
Relevant Information ◽  
Local Features ◽  
New Family ◽  
Lighting Conditions ◽  
Omnidirectional Images ◽  
Great Development

Over the last few years, mobile robotics has experienced a great development thanks to the wide variety of problems that can be solved with this technology. An autonomous mobile robot must be able to operate in a priori unknown environments, planning its trajectory and navigating to the required target points. With this aim, it is crucial solving the mapping and localization problems with accuracy and acceptable computational cost. The use of omnidirectional vision systems has emerged as a robust choice thanks to the big quantity of information they can extract from the environment. The images must be processed to obtain relevant information that permits solving robustly the mapping and localization problems. The classical frameworks to address this problem are based on the extraction, description and tracking of local features or landmarks. However, more recently, a new family of methods has emerged as a robust alternative in mobile robotics. It consists of describing each image as a whole, what leads to conceptually simpler algorithms. While methods based on local features have been extensively studied and compared in the literature, those based on global appearance still merit a deep study to uncover their performance. In this work, a comparative evaluation of six global-appearance description techniques in localization tasks is carried out, both in terms of accuracy and computational cost. Some sets of images captured in a real environment are used with this aim, including some typical phenomena such as changes in lighting conditions, visual aliasing, partial occlusions and noise.

NEURAL FACTORS IN THE MAINTENANCE OF LACTATION IN THE RAT

1967 ◽  
Vol 38 (1) ◽  
pp. 51-59 ◽  
Author(s):  
J. A. EDWARDSON ◽  
J. T. EAYRS
Keyword(s):  
Litter Size ◽  
Milk Yield ◽  
Quantitative Relationship ◽  
Mammary Tissue ◽  
Single Pair ◽  
Endocrine Response ◽  
Peripheral Innervation ◽  
Lactational Performance ◽  
Neural Factors

SUMMARY The role of the peripheral innervation of mammary tissue in the maintenance of lactation has been investigated by the procedure of selective thelectomy combined with denervation of the posterior thoracic nipples. When suckling is restricted to a single pair of nipples bilateral transection of the three adjacent nerves supplying a nipple arrests lactation completely; partial denervation is associated with a reduced level of lactational performance which is directly related to the concentration of the residual innervation. Increase in litter size is associated with an overall increase in milk-yield up to a limit beyond which the addition of further young to the litter is without effect. It is inferred that there is a quantitative relationship between the neural stimulus of suckling and the endocrine response of the hypothalamopituitary system.

Mothering from a Distance: The Lived Experiences of Filipina Transnational Mothers in Singapore

2021 ◽  
pp. 106648072110618
Author(s):  
Jeffrey R. Ballaret ◽  
Jonel P. Lanada
Keyword(s):  
Labor Migration ◽  
Lived Experiences ◽  
Positive Thinking ◽  
Economic Prosperity ◽  
Virtual Communication ◽  
The Past ◽  
New Family ◽  
Transnational Mothers

Transnational motherhood continues to grow among Filipina mothers. It resulted in economic prosperity and quality of life of Filipino families but caused family pressures within the sphere of motherhood. This qualitative study is grounded through the philosophical lens of phenomenology aimed to explore the lived experiences of transnational mothers. It seeks to understand their life history, present experiences that redefined their motherhood, and reflections of the future. The lived experiences of transnational mothers began with the experience of the personal and structural dimensions of poverty in the past. Their decision to embark on labor migration was primarily instrumental to alleviate their life condition. However, mothering from a distance has ensued emotional, social, and psychological strains. To cope with the situation, they observed four central coping ways: the role of faith and prayer; the repression of emotional strains through work and friends; focus and positive thinking; and the rationalization of distance by way of regular virtual communication and remittances. The hopes of transnational mothers revealed their yearning for family reunification predicated on improving their family life through financial security, savings, and children's education. This intersection between motherhood and labor migration has therefore created new family forms, structures, roles, meaning, and expectations.

Efficient linear optics quantum computation

2001 ◽  
Vol 1 (Special) ◽  
pp. 13-19
Author(s):  
G.J. Milburn ◽  
T. Ralph ◽  
A. White ◽  
E. Knill ◽  
R. Laflamme
Keyword(s):  
Quantum Computation ◽  
Single Photon ◽  
Quantum Algorithms ◽  
Optical Nonlinearities ◽  
Linear Optics ◽  
Optical Elements ◽  
Particle Detectors ◽  
Feed Forward ◽  
Single Electrons ◽  
Photon Source

Two qubit gates for photons are generally thought to require exotic materials with huge optical nonlinearities. We show here that, if we accept two qubit gates that only work conditionally, single photon sources, passive linear optics and particle detectors are sufficient for implementing reliable quantum algorithms. The conditional nature of the gates requires feed-forward from the detectors to the optical elements. Without feed forward, non-deterministic quantum computation is possible. We discuss one proposed single photon source based on the surface acoustic wave guiding of single electrons.

scholarly journals Peran Penyuluh Agama dalam Kehidupan Beragama guna Meningkatkan Keluarga Sakinah (Studi Kasus pada Majelis Ta'lim Al-Muhajirin Sukarame II Bandar Lampung)

2019 ◽  
Vol 1 (1) ◽  
pp. 92-108
Author(s):  
Rahmat Hidayat
Keyword(s):  
Religious Language ◽  
Community Leaders ◽  
Religious Leaders ◽  
Government Program ◽  
New Family ◽  
Strategic Role ◽  
The Government ◽  
Negative Impacts

ABSTRACT  Islamic Religious Instructor has a quite strategic role in the midst of society. besides he is a preacher of Islam, also the Islamic Religious Instructor, according to his function as a guide, illuminator, and community builder with religious language. The role of religious counselors in addition to functioning as an impetus for the community to actively participate in development also plays a role in overcoming obstacles that build the course of development, particularly overcoming negative impacts. Religious instructors as religious leaders always guide, nurture, and move the community to do good and stay away from prohibited acts, inviting something that is needed by the community in fostering its territory both for the purposes of social facilities and worship. The Religious Instructor is a place to ask questions and a place to complain for his community to solve and resolve with his advice. Religious Instructors as community leaders act as priests in matters of religion and social problems as well as in matters of state by an effort to succeed the government program. The role of religious instructors in improving and creating the quality of sakinah families in the Muhajirin AL Muhajirin voluntary II Ta'lim Assembly group in Teluk Betung Barat Subdistrict, Bandar Lampung City, it can be concluded that religious counselors play an important role in improving the quality of sakinah families, one of which is in terms of worship , and also able to improve the quality of a new family and has long become a sakinah family.

scholarly journals Comultiplication Rules for the Double Schur Functions and Cauchy Identities

10.37236/102 ◽  
2009 ◽  
Vol 16 (1) ◽  
Author(s):  
A. I. Molev
Keyword(s):  
Symmetric Functions ◽  
Schur Functions ◽  
Primitive Elements ◽  
Expansion Formula ◽  
New Family ◽  
Dual Object ◽  
Multiplication Rule ◽  
Distinguished Basis ◽  
Natural Way

The double Schur functions form a distinguished basis of the ring $\Lambda(x\!\parallel\!a)$ which is a multiparameter generalization of the ring of symmetric functions $\Lambda(x)$. The canonical comultiplication on $\Lambda(x)$ is extended to $\Lambda(x\!\parallel\!a)$ in a natural way so that the double power sums symmetric functions are primitive elements. We calculate the dual Littlewood–Richardson coefficients in two different ways thus providing comultiplication rules for the double Schur functions. We also prove multiparameter analogues of the Cauchy identity. A new family of Schur type functions plays the role of a dual object in the identities. We describe some properties of these dual Schur functions including a combinatorial presentation and an expansion formula in terms of the ordinary Schur functions. The dual Littlewood–Richardson coefficients provide a multiplication rule for the dual Schur functions.

scholarly journals Super Quantum Airy Structures

2020 ◽  
Vol 380 (1) ◽  
pp. 449-522
Author(s):  
Vincent Bouchard ◽  
Paweł Ciosmak ◽  
Leszek Hadasz ◽  
Kento Osuga ◽  
Błażej Ruba ◽  
...  
Keyword(s):  
Classification Scheme ◽  
Graphical Representation ◽  
Free Energies ◽  
Recursion Relations ◽  
Gauge Transformations ◽  
Infinite Dimensional ◽  
Finite Dimensional ◽  
Frobenius Algebras ◽  
Topological Recursion

Abstract We introduce super quantum Airy structures, which provide a supersymmetric generalization of quantum Airy structures. We prove that to a given super quantum Airy structure one can assign a unique set of free energies, which satisfy a supersymmetric generalization of the topological recursion. We reveal and discuss various properties of these supersymmetric structures, in particular their gauge transformations, classical limit, peculiar role of fermionic variables, and graphical representation of recursion relations. Furthermore, we present various examples of super quantum Airy structures, both finite-dimensional—which include well known superalgebras and super Frobenius algebras, and whose classification scheme we also discuss—as well as infinite-dimensional, that arise in the realm of vertex operator super algebras.

scholarly journals Silicon Meets Graphene for a New Family of Near-Infrared Schottky Photodetectors

2019 ◽  
Vol 9 (18) ◽  
pp. 3677 ◽  
Author(s):  
Maurizio Casalino
Keyword(s):  
Near Infrared ◽  
Infrared Photodetectors ◽  
Strong Light ◽  
Broadband Absorption ◽  
New Family ◽  
High Carrier Mobility ◽  
Light Matter Interaction ◽  
High Carrier ◽  
Schottky Junctions

In recent years, graphene has attracted much interest due to its unique properties of flexibility, strong light-matter interaction, high carrier mobility and broadband absorption. In addition, graphene can be deposited on many substrates including silicon with which is able to form Schottky junctions, opening the path to the realization of near-infrared photodetectors based on the internal photoemission effect where graphene plays the role of the metal. In this work, we review the very recent progress of the near-infrared photodetectors based on Schottky junctions involving graphene. This new family of device promises to overcome the limitations of the Schottky photodetectors based on metals showing the potentialities to compare favorably with germanium photodetectors currently employed in silicon photonics.

scholarly journals Assessing the quantumness of the annealing dynamics via Leggett Garg’s inequalities: a weak measurement approach

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
V. Vitale ◽  
G. De Filippis ◽  
A. de Candia ◽  
A. Tagliacozzo ◽  
V. Cataudella ◽  
...  
Keyword(s):  
Quantum Computation ◽  
Quantum Computers ◽  
Quantum Annealing ◽  
Adiabatic Quantum Computation ◽  
Universal Quantum ◽  
Full Quantum ◽  
Measurement Approach ◽  
Coherent Behavior ◽  
Sizable Number

Abstract Adiabatic quantum computation (AQC) is a promising counterpart of universal quantum computation, based on the key concept of quantum annealing (QA). QA is claimed to be at the basis of commercial quantum computers and benefits from the fact that the detrimental role of decoherence and dephasing seems to have poor impact on the annealing towards the ground state. While many papers show interesting optimization results with a sizable number of qubits, a clear evidence of a full quantum coherent behavior during the whole annealing procedure is still lacking. In this paper we show that quantum non-demolition (weak) measurements of Leggett Garg inequalities can be used to efficiently assess the quantumness of the QA procedure. Numerical simulations based on a weak coupling Lindblad approach are compared with classical Langevin simulations to support our statements.

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