A molecular communication system includes a plurality of molecular transmission nanomachines randomly located in a first space, a molecular reception nanomachine and a molecular transmission channel. The molecular reception nanomachine is located in the first space, and receives at least one information molecule representing first data from an l-th molecular transmission nanomachine to obtain the first data based on the at least one information molecule. The l-th molecular transmission nanomachine is l-th nearest to the molecular reception nanomachine. The molecular transmission channel provides a transmission path for the at least one information molecule moving in the first space based on an anomalous diffusion process. The plurality of molecular transmission nanomachines are scattered in the first space according to a stationary Cox process. A process of transmitting the at least one information molecule from the l-th molecular transmission nanomachine to the molecular reception nanomachine is modeled based on a stochastic nanonetwork.

A molecular communication system includes a plurality of molecular transmission nanomachines randomly located in a first space, a molecular reception nanomachine and a molecular transmission channel. The molecular reception nanomachine is located in the first space, and receives at least one information molecule representing first data from an l-th molecular transmission nanomachine to obtain the first data based on the at least one information molecule. The l-th molecular transmission nanomachine is l-th nearest to the molecular reception nanomachine. The molecular transmission channel provides a transmission path for the at least one information molecule moving in the first space based on an anomalous diffusion process. The plurality of molecular transmission nanomachines are scattered in the first space according to a stationary Cox process. A process of transmitting the at least one information molecule from the l-th molecular transmission nanomachine to the molecular reception nanomachine is modeled based on a stochastic nanonetwork.

A communication system includes a two-dimensional array of a plurality of plasmonic nano-antennas. Each plasmonic nano-antenna supports a surface plasmon polariton wave. A plurality of communications elements each excite a corresponding one of the plasmonic nano-antennas, thereby causing a surface plasmon polariton wave that corresponds to a signal to form on each of the plasmonic nano-antennas.

A communication system includes a two-dimensional array of a plurality of plasmonic nano-antennas. Each plasmonic nano-antenna supports a surface plasmon polariton wave. A plurality of communications elements each excite a corresponding one of the plasmonic nano-antennas, thereby causing a surface plasmon polariton wave that corresponds to a signal to form on each of the plasmonic nano-antennas.

A linearly polarized upconverting optical signal at optical frequency ν.sub.OPT and a propagating input signal at frequency ν.sub.GHz are combined by an input beam combiner to copropagate through a nonlinear optical medium and generate upconverted optical signals at one or both sum or difference frequencies ν.sub.SUM=ν.sub.OPT+ν.sub.GHz or ν.sub.DIFF=ν.sub.OPT−ν.sub.GHz. The orthogonally polarized upconverting and upconverted optical signals are separated by a polarizer, and the upconverted optical signal is preferentially transmitted to a detection system by an optical filter. The input signal is modulated to encode transmitted information, and that modulation is imparted onto the upconverted optical signal. The detection system includes one or more photodetectors, receives the upconverted optical signal, and generates therefrom electrical signals that are modulated to encode the transmitted information.

A scheme for generating asymmetric single sideband photonic vector signal at millimeter wave spectral region is described. At a transmitter, information bits to be transmitted are modulated using a vector modulation technique to generate a baseband signal. The baseband signal is converted into its single sideband (SSB) version using a complex frequency source having a first frequency. The real part of the upconverted signal is added to the real part of a second frequency source and is input as I component to an I/Q modulator. The imaginary part of the upconverted signal is added to the imaginary part of the second frequency source and is used as the Q component. The I/Q modulator is driven by a laser source at frequency fc. The resulting signal is transmitter over an optical transmission medium and upconverted by a single-ended photodiode to a desired radio-frequency (RF) carrier frequency.

The present technology relates to a transmission apparatus, a transmission method, and a filter circuit that make it possible to transmit a signal with high quality, the signal including a plurality of signals having different speeds. The transmission apparatus includes a detection unit that detects each of a plurality of signals having different speeds from an input signal. Further, the transmission apparatus includes an output control unit that controls output of an output signal including the plurality of signals, on the basis of detection results of the plurality of signals by the detection unit. The present technology can be applied to, for example, a transmission apparatus that transmits a serial signal conforming to the USB 3.0 standards or a transmission apparatus that converts the serial signal described above into a millimeter-wave signal or an optical signal and sends and receives the signal.

A quantum state measurement system includes a quantum state generator that generates an optical photon comprising a quantum state. A spectral converter modifies a spectrum of the optical photon and provides the optical photon comprising the quantum state with the modified spectrum. An optical switch switches the optical photon with the modified spectrum to one of a plurality of outputs. A measurement system determines a fidelity of the quantum state of the optical photon with the modified spectrum. A control system provides an electrical control signal to the quantum state generator in response to the determined fidelity of the quantum state that improves a fidelity of at least some subsequent generated optical photons comprising a quantum state that are generated by the quantum state generator after the optical photon.

A quantum state measurement system includes a quantum state generator that generates an optical photon comprising a quantum state. A spectral converter modifies a spectrum of the optical photon and provides the optical photon comprising the quantum state with the modified spectrum. An optical switch switches the optical photon with the modified spectrum to one of a plurality of outputs. A measurement system determines a fidelity of the quantum state of the optical photon with the modified spectrum. A control system provides an electrical control signal to the quantum state generator in response to the determined fidelity of the quantum state that improves a fidelity of at least some subsequent generated optical photons comprising a quantum state that are generated by the quantum state generator after the optical photon.

Provided are a Kramers—Kronig (KK) reception-based terahertz (THz) signal reception apparatus and a method for compensating a frequency offset using the same. A method of compensating for a frequency offset performed by a THz signal reception apparatus includes receiving, from a THz signal transmission apparatus, a THz signal including carrier signals corresponding to three different frequency bands, extracting, from the received THz signal, a reference carrier included in the THz signal or a sampling clock generated in a process of generating a data signal, and compensating for a frequency offset generated in a process of transmitting the THz signal by using the extracted reference carrier or sampling clock.