Add the cream to the tomatoes and bring to a simmer. Cook over moderate heat, gently crushing the tomatoes, until the cream thickens slightly, about 3 minutes. Add the shrimp and simmer over moderate heat until cooked through, about 2 minutes. Season with salt and pepper. Add the linguine to the skillet along with the lemon juice and toss over low heat until the pasta is coated, about 1 minute. Add the lemon zest and parsley and toss. Transfer the pasta to warm bowls and serve at once.