We propose an optical scheme to prepare large-scale entangled networks of $W$ states. The works by simultaneously fusing three polarization-encoded states arbitrary size via accessing only one qubit each state. It is composed a Fredkin gate (controlled-swap gate), two fusion gates [as proposed in S. K. Ozdemir et al., New J. Phys. 13, 103003 (2011)], and $H$-polarized ancilla photon. Starting with $n$-qubit states, the prepares new state $3(n\ensuremath{-}1)$ qubits after postselection if...

Integrating a single Fredkin (controlled swap) gate to the previously introduced W state fusion mechanism (Ozdemir et al, N. J. Phys. 13, 103003, 2011) and using an ancillary photon, we increase size of fused states essentially, improve success probability process in promising way for possible deterministic mechanism. Besides fusing arbitrary states, our setup can also fuse Bell create with 3/4 which is much higher than previous works. Therefore only this setup, it now start pairs expand...

Entanglement has been studied extensively for unveiling the mysteries of non-classical correlations between quantum systems. In bipartite case, there are well known measures quantifying entanglement such as concurrence, relative entropy (REE) and negativity, which cannot be increased via local operations. It was found that sets non-maximally entangled states two qubits, comparing these may lead to different orderings states. On other hand, although it is not an measure monotonic under...

Abstract Entanglement is at the heart of quantum technologies such as information and metrology. Providing larger Fisher (QFI), entangled systems can be better resources than separable in However effects on entanglement dynamics decoherence usually decrease QFI considerably. On other hand, Dzyaloshinskii-Moriya (DM) interaction has been shown to excite entanglement. Since an increase does not imply also there are cases where decreases increases, it interesting study influence DM In this...

Abstract W state is a key resource in quantum communication. Fusion technology has been proven to be good candidate for preparing large-size from two or more small-size states linear optical system. It of great importance study how fuse via light-matter interface. Here we show that it possible prepare W-state networks using fusion mechanism cavity QED The detuned interaction between three atoms and vacuum mode constitute the main mechanism, based on which atomic can fused into larger-size...

We show that the temperature of a cavity field can be drastically varied by its interaction with suitably-entangled atom pairs (dimers) traversing under realistic atomic decoherence. To this end we resort to hitherto untapped resource naturally entangled dimers whose state simply controlled via molecular dissociation, collisions forming dimer, or unstable such as positronium. Depending on chosen cavity-field mode driven steady-state is either much lower higher than ambient temperature,...

In large quantum systems multipartite entanglement can be found in many inequivalent classes under local operations and classical communication. Preparing states of arbitrary size different is important for performing a wide range protocols. W states, particular, constitute class with variety networking However, all known schemes preparing are probabilistic, resource requirements increasing at least sub-exponentially. We propose deterministic scheme that requires no prior performed locally....

We present a deterministic scheme for generating large-scale atomic W states in cavity QED system via simple expansion mechanism, which is realized only by detuned interaction between two identical atoms and vacuum mode.With the presented scheme, W-type Bell pair can be created an n-atom state expanded to 2n-atom with unit probability of success principle.No multi-atom gates, quantum memories or non-demolition measurements are required, greatly simplifying experimental realization scheme.The...

Spin systems such as silicon or nitrogen vacancy centers in diamond, quantum dots and dot molecules coupled to optical cavities appear key elements for creating networks not only constituting the nodes of network, but also assisting creation photonic networks. Here we study deterministic preparation arbitrary size $W$ states with spin systems. We present an efficient operation on three qubits, two being logical qubits one ancillary qubit, where no interaction between are required. The...

Although tsunamis occur less frequently compared to some other natural disasters, they can be extremely devastating in the nearshore environment if occur. An earthquake of magnitude 6.9 Mw occurred on 30 October 2020 at 12:51 p.m. UTC (2:51 GMT+03:00) and its epicenter was approximately 23 km south İzmir province Turkey, off Greek island Samos. The tsunami event triggered by this is known as İzmir-Samos (Aegean) tsunami, paper, we study hydrodynamics using these artificial intelligence (AI)...

Decoherence is a major issue in quantum information processing, degrading the performance of tasks or even precluding them. Quantum error-correcting codes, creating decoherence-free subspaces, and Zeno effect are among means for protecting systems from decoherence. Increasing number qubits system to be utilized task as resource expands state space. This creates opportunity engineer way that improves protect against Here, we consider thermalization machine four-qubit atomic states its...

We study the quantum Fisher information (QFI) of W states and -like under decoherence.In particular, we nd that on contrary to amplitude damping depolarizing decoherence, a state 3 qubits obtained by discarding 1 qubit genuine 4 is more robust than amplifying phase decoherence.

Abstract Preparing large-scale multi-partite entangled states of quantum bits in each physical form such as photons, atoms or electrons for specific application area is a fundamental issue science and technologies. Here, we propose setup based on Pauli spin blockade (PSB) the preparation W double dot (DQD). Within proposed scheme, two n m respectively can be fused by allowing state to transfer single electron dot. The presence absence PSB then determines whether have not, leading creation +...

Quantum Fisher information has recently been an essential tool for analyzing the phase sensitivity of quantum states in various tasks, requiring high precision, such as clock synchronization, positioning and many applications which include interferometers.Due to interactions with environment, all systems are subject decoherence eects.Therefore research on under attracting more attention.In this work, information, we study bipartite correlations, particular four Bell pairs amplitude damping...

Quantum entanglement is one of key concepts in quantum communication engineering. Ordering the systems according to their measures a popular problem field. For two level (qubit) particles, state ordering has been studied with respect well-known such as Concurrence, Negativity and Relative Entropy Entanglement (REE) [1-5]. In this work, we study two-qubit Fisher Information vs. Concurrence. particular, constructing 1K random states calculating Concurrences Negativities, obtain orderings by...