Walk a Mile in the Shoes of a Copyright Troll: Analyzing and Overcoming the Joinder Issue in BitTorrent Lawsuits

This Comment analyzes the issues surrounding joinder of copyright infringers who use BitTorrent, explores how joinder can be used and limited to create a more viable solution for copyright holders and consumers, as well as, supplements the sparse regulations that encompass joinder to create a rule that accommodates this technological era. Part II explains Copyright Law and the procedural aspects of a copyright infringement suit and joinder of defendants. Part III delves into the history of peer-to-peer (P2P) file-sharing lawsuits and provides an illustration of where case law rests today regarding P2P networks. Part IV describes the BitTorrent network and explains the way that content is transferred between users. Part V highlights the issues that piracy presents and the arguments that the “Doe” defendants have proposed against joinder, and then proceeds to counter those arguments. Part VI suggests joinder should be an available option in an effort to prevent illegal behavior and promote efficiency. It proposes a test that would establish limitations that would help ease the burden on defendants by preventing copyright holders from abusing their powers while balancing the copyright holders\u27 interests in guarding their rights. Part VII reiterates the necessity for joinder and analyzes the current and future positive impact on businesses that joinder will produce

Adiabatic creation of entangled states by a bichromatic field designed from the topology of the dressed eigenenergies

Preparation of entangled pairs of coupled two-state systems driven by a bichromatic external field is studied. We use a system of two coupled spin-1/2 that can be translated into a three-state ladder model whose intermediate state represents the entangled state. We show that this entangled state can be prepared in a robust way with appropriate fields. Their frequencies and envelopes are derived from the topological properties of the model.Comment: 10 pages, 9 figure

Coherent population transfer beyond the adiabatic limit: generalized matched pulses and higher-order trapping states

We show that the physical mechanism of population transfer in a 3-level system with a closed loop of coherent couplings (loop-STIRAP) is not equivalent to an adiabatic rotation of the dark-state of the Hamiltonian but coresponds to a rotation of a higher-order trapping state in a generalized adiabatic basis. The concept of generalized adiabatic basis sets is used as a constructive tool to design pulse sequences for stimulated Raman adiabatic passage (STIRAP) which give maximum population transfer also under conditions when the usual condition of adiabaticty is only poorly fulfilled. Under certain conditions for the pulses (generalized matched pulses) there exists a higher-order trapping state, which is an exact constant of motion and analytic solutions for the atomic dynamics can be derived.Comment: 15 pages, 9 figure

Measuring a coherent superposition

We propose a simple method for measuring the populations and the relative phase in a coherent superposition of two atomic states. The method is based on coupling the two states to a third common (excited) state by means of two laser pulses, and measuring the total fluorescence from the third state for several choices of the excitation pulses.Comment: 7 pages, 1 figure, twocolumn REVTe